diff --git a/src/attradd.js b/src/attradd.js
index f28fc50..ca3c25b 100644
--- a/src/attradd.js
+++ b/src/attradd.js
@@ -54,11 +54,9 @@ eve.on('snap.util.attr', function (val) {
 })(-10)
 
 eve.on('snap.util.equal', function (name, b) {
-  let A,
-    B,
-    a = String(this.attr(name) || ''),
-    el = this,
-    bplus = String(b).match(reAddon)
+  let a = String(this.attr(name) || '')
+  let bplus = String(b).match(reAddon)
+
   if (bplus) {
     eve.stop()
     let unit = bplus[3] || '',
diff --git a/src/mina.js b/src/mina.js
index 029e51c..66221e4 100644
--- a/src/mina.js
+++ b/src/mina.js
@@ -1,18 +1,10 @@
-// Copyright (c) 2017 Adobe Systems Incorporated. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/**
+ * {}
+ * @author yutent<yutent.io@gmail.com>
+ * @date 2024/03/08 10:20:25
+ */
+
 import eve from './eve.js'
-import { Snap } from './svg.js'
 import { uuid } from './utils.js'
 
 let animations = {},
@@ -127,74 +119,71 @@ let animations = {},
         a.update()
       }
     requestID = len ? requestAnimFrame(frame) : false
-  },
-  /*\
-     * mina
-     [ method ]
-     **
-     * Generic animation of numbers
-     **
-     - a (number) start _slave_ number
-     - A (number) end _slave_ number
-     - b (number) start _master_ number (start time in general case)
-     - B (number) end _master_ number (end time in general case)
-     - get (function) getter of _master_ number (see @mina.time)
-     - set (function) setter of _slave_ number
-     - easing (function) #optional easing function, default is @mina.linear
-     = (object) animation descriptor
-     o {
-     o         id (string) animation id,
-     o         start (number) start _slave_ number,
-     o         end (number) end _slave_ number,
-     o         b (number) start _master_ number,
-     o         s (number) animation status (0..1),
-     o         dur (number) animation duration,
-     o         spd (number) animation speed,
-     o         get (function) getter of _master_ number (see @mina.time),
-     o         set (function) setter of _slave_ number,
-     o         easing (function) easing function, default is @mina.linear,
-     o         status (function) status getter/setter,
-     o         speed (function) speed getter/setter,
-     o         duration (function) duration getter/setter,
-     o         stop (function) animation stopper
-     o         pause (function) pauses the animation
-     o         resume (function) resumes the animation
-     o         update (function) calles setter with the right value of the animation
-     o }
-    \*/
-  mina = function (a, A, b, B, get, set, easing) {
-    let anim = {
-      id: uuid('M'),
-      start: a,
-      end: A,
-      b: b,
-      s: 0,
-      dur: B - b,
-      spd: 1,
-      get: get,
-      set: set,
-      easing: easing || mina.linear,
-      status: sta,
-      speed: speed,
-      duration: duration,
-      stop: stopit,
-      pause: pause,
-      resume: resume,
-      update: update
-    }
-    animations[anim.id] = anim
-    let len = 0,
-      i
-    for (i in animations)
-      if (animations.hasOwnProperty(i)) {
-        len++
-        if (len == 2) {
-          break
-        }
-      }
-    len == 1 && frame()
-    return anim
   }
+/***
+   * Generic animation of numbers
+   **
+    * a (number) start _slave_ number
+    * A (number) end _slave_ number
+    * b (number) start _master_ number (start time in general case)
+    * B (number) end _master_ number (end time in general case)
+    * get (function) getter of _master_ number (see @mina.time)
+    * set (function) setter of _slave_ number
+    * easing (function) #optional easing function, default is @mina.linear
+    = (object) animation descriptor
+    {
+      id (string) animation id,
+      start (number) start _slave_ number,
+      end (number) end _slave_ number,
+      b (number) start _master_ number,
+      s (number) animation status (0..1),
+      dur (number) animation duration,
+      spd (number) animation speed,
+      get (function) getter of _master_ number (see @mina.time),
+      set (function) setter of _slave_ number,
+      easing (function) easing function, default is @mina.linear,
+      status (function) status getter/setter,
+      speed (function) speed getter/setter,
+      duration (function) duration getter/setter,
+      stop (function) animation stopper
+      pause (function) pauses the animation
+      resume (function) resumes the animation
+      update (function) calles setter with the right value of the animation
+    }
+  */
+export const mina = function (a, A, b, B, get, set, easing) {
+  let anim = {
+    id: uuid('M'),
+    start: a,
+    end: A,
+    b: b,
+    s: 0,
+    dur: B - b,
+    spd: 1,
+    get: get,
+    set: set,
+    easing: easing || mina.linear,
+    status: sta,
+    speed: speed,
+    duration: duration,
+    stop: stopit,
+    pause: pause,
+    resume: resume,
+    update: update
+  }
+  animations[anim.id] = anim
+  let len = 0,
+    i
+  for (i in animations)
+    if (animations.hasOwnProperty(i)) {
+      len++
+      if (len == 2) {
+        break
+      }
+    }
+  len == 1 && frame()
+  return anim
+}
 /*\
      * mina.time
      [ method ]
diff --git a/src/mouse.js b/src/mouse.js
index 49e253d..28b7f68 100644
--- a/src/mouse.js
+++ b/src/mouse.js
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 import eve from './eve.js'
-import { Snap, SnapElement, Paper } from './svg.js'
+import { Snap, SnapElement } from './svg.js'
 import { is } from './utils.js'
 import { doc, win } from './lib/constants.js'
 
@@ -169,287 +169,62 @@ let elproto = SnapElement.prototype,
     }
     drag = []
   }
-/*\
-     * SnapElement.click
-     [ method ]
-     **
-     * Adds a click event handler to the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
-/*\
-     * SnapElement.unclick
-     [ method ]
-     **
-     * Removes a click event handler from the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
 
-/*\
-     * SnapElement.dblclick
-     [ method ]
-     **
-     * Adds a double click event handler to the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
-/*\
-     * SnapElement.undblclick
-     [ method ]
-     **
-     * Removes a double click event handler from the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
-
-/*\
-     * SnapElement.mousedown
-     [ method ]
-     **
-     * Adds a mousedown event handler to the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
-/*\
-     * SnapElement.unmousedown
-     [ method ]
-     **
-     * Removes a mousedown event handler from the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
-
-/*\
-     * SnapElement.mousemove
-     [ method ]
-     **
-     * Adds a mousemove event handler to the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
-/*\
-     * SnapElement.unmousemove
-     [ method ]
-     **
-     * Removes a mousemove event handler from the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
-
-/*\
-     * SnapElement.mouseout
-     [ method ]
-     **
-     * Adds a mouseout event handler to the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
-/*\
-     * SnapElement.unmouseout
-     [ method ]
-     **
-     * Removes a mouseout event handler from the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
-
-/*\
-     * SnapElement.mouseover
-     [ method ]
-     **
-     * Adds a mouseover event handler to the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
-/*\
-     * SnapElement.unmouseover
-     [ method ]
-     **
-     * Removes a mouseover event handler from the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
-
-/*\
-     * SnapElement.mouseup
-     [ method ]
-     **
-     * Adds a mouseup event handler to the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
-/*\
-     * SnapElement.unmouseup
-     [ method ]
-     **
-     * Removes a mouseup event handler from the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
-
-/*\
-     * SnapElement.touchstart
-     [ method ]
-     **
-     * Adds a touchstart event handler to the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
-/*\
-     * SnapElement.untouchstart
-     [ method ]
-     **
-     * Removes a touchstart event handler from the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
-
-/*\
-     * SnapElement.touchmove
-     [ method ]
-     **
-     * Adds a touchmove event handler to the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
-/*\
-     * SnapElement.untouchmove
-     [ method ]
-     **
-     * Removes a touchmove event handler from the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
-
-/*\
-     * SnapElement.touchend
-     [ method ]
-     **
-     * Adds a touchend event handler to the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
-/*\
-     * SnapElement.untouchend
-     [ method ]
-     **
-     * Removes a touchend event handler from the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
-
-/*\
-     * SnapElement.touchcancel
-     [ method ]
-     **
-     * Adds a touchcancel event handler to the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
-/*\
-     * SnapElement.untouchcancel
-     [ method ]
-     **
-     * Removes a touchcancel event handler from the element
-     - handler (function) handler for the event
-     = (object) @SnapElement
-    \*/
 for (let i = events.length; i--; ) {
-  ;(function (eventName) {
-    Snap[eventName] = elproto[eventName] = function (fn, scope) {
-      if (is(fn, 'function')) {
-        this.events = this.events || []
-        this.events.push({
-          name: eventName,
-          f: fn,
-          unbind: addEvent(this.node || document, eventName, fn, scope || this)
-        })
-      } else {
-        for (let i = 0, ii = this.events.length; i < ii; i++)
-          if (this.events[i].name == eventName) {
-            try {
-              this.events[i].f.call(this)
-            } catch (e) {}
-          }
-      }
-      return this
-    }
-    Snap['un' + eventName] = elproto['un' + eventName] = function (fn) {
-      let events = this.events || [],
-        l = events.length
-      while (l--)
-        if (events[l].name == eventName && (events[l].f == fn || !fn)) {
-          events[l].unbind()
-          events.splice(l, 1)
-          !events.length && delete this.events
-          return this
+  let eventName = events[i]
+
+  Snap[eventName] = elproto[eventName] = function (fn, scope) {
+    if (is(fn, 'function')) {
+      this.events = this.events || []
+      this.events.push({
+        name: eventName,
+        f: fn,
+        unbind: addEvent(this.node || document, eventName, fn, scope || this)
+      })
+    } else {
+      for (let i = 0, ii = this.events.length; i < ii; i++)
+        if (this.events[i].name == eventName) {
+          try {
+            this.events[i].f.call(this)
+          } catch (e) {}
         }
-      return this
     }
-  })(events[i])
+    return this
+  }
+
+  Snap['un' + eventName] = elproto['un' + eventName] = function (fn) {
+    let events = this.events || [],
+      l = events.length
+    while (l--)
+      if (events[l].name == eventName && (events[l].f == fn || !fn)) {
+        events[l].unbind()
+        events.splice(l, 1)
+        !events.length && delete this.events
+        return this
+      }
+    return this
+  }
 }
-/*\
-     * SnapElement.hover
-     [ method ]
-     **
-     * Adds hover event handlers to the element
-     - f_in (function) handler for hover in
-     - f_out (function) handler for hover out
-     - icontext (object) #optional context for hover in handler
-     - ocontext (object) #optional context for hover out handler
-     = (object) @SnapElement
-    \*/
+/***
+ * Adds hover event handlers to the element
+ * f_in (function) handler for hover in
+ * f_out (function) handler for hover out
+ * icontext (object) #optional context for hover in handler
+ * ocontext (object) #optional context for hover out handler
+ */
 elproto.hover = function (f_in, f_out, scope_in, scope_out) {
   return this.mouseover(f_in, scope_in).mouseout(f_out, scope_out || scope_in)
 }
-/*\
-     * SnapElement.unhover
-     [ method ]
-     **
-     * Removes hover event handlers from the element
-     - f_in (function) handler for hover in
-     - f_out (function) handler for hover out
-     = (object) @SnapElement
-    \*/
+/**
+ * Removes hover event handlers from the element
+ * f_in (function) handler for hover in
+ * f_out (function) handler for hover out
+ */
 elproto.unhover = function (f_in, f_out) {
   return this.unmouseover(f_in).unmouseout(f_out)
 }
 let draggable = []
-// SIERRA unclear what _context_ refers to for starting, ending, moving the drag gesture.
-// SIERRA SnapElement.drag(): _x position of the mouse_: Where are the x/y values offset from?
-// SIERRA SnapElement.drag(): much of this member's doc appears to be duplicated for some reason.
-// SIERRA Unclear about this sentence: _Additionally following drag events will be triggered: drag.start.<id> on start, drag.end.<id> on end and drag.move.<id> on every move._ Is there a global _drag_ object to which you can assign handlers keyed by an element's id?
-/*\
-     * SnapElement.drag
-     [ method ]
-     **
-     * Adds event handlers for an element's drag gesture
-     **
-     - onmove (function) handler for moving
-     - onstart (function) handler for drag start
-     - onend (function) handler for drag end
-     - mcontext (object) #optional context for moving handler
-     - scontext (object) #optional context for drag start handler
-     - econtext (object) #optional context for drag end handler
-     * Additionaly following `drag` events are triggered: `drag.start.<id>` on start, 
-     * `drag.end.<id>` on end and `drag.move.<id>` on every move. When element is dragged over another element 
-     * `drag.over.<id>` fires as well.
-     *
-     * Start event and start handler are called in specified context or in context of the element with following parameters:
-     o x (number) x position of the mouse
-     o y (number) y position of the mouse
-     o event (object) DOM event object
-     * Move event and move handler are called in specified context or in context of the element with following parameters:
-     o dx (number) shift by x from the start point
-     o dy (number) shift by y from the start point
-     o x (number) x position of the mouse
-     o y (number) y position of the mouse
-     o event (object) DOM event object
-     * End event and end handler are called in specified context or in context of the element with following parameters:
-     o event (object) DOM event object
-     = (object) @SnapElement
-    \*/
+
 elproto.drag = function (
   onmove,
   onstart,
@@ -498,22 +273,7 @@ elproto.drag = function (
   el.mousedown(init)
   return el
 }
-/*
-     * SnapElement.onDragOver
-     [ method ]
-     **
-     * Shortcut to assign event handler for `drag.over.<id>` event, where `id` is the element's `id` (see @SnapElement.id)
-     - f (function) handler for event, first argument would be the element you are dragging over
-    \*/
-// elproto.onDragOver = function (f) {
-//     f ? eve.on("snap.drag.over." + this.id, f) : eve.unbind("snap.drag.over." + this.id);
-// };
-/*\
-     * SnapElement.undrag
-     [ method ]
-     **
-     * Removes all drag event handlers from the given element
-    \*/
+
 elproto.undrag = function () {
   let i = draggable.length
   while (i--)
diff --git a/src/paper.js b/src/paper.js
index ee958d6..06744b0 100644
--- a/src/paper.js
+++ b/src/paper.js
@@ -14,27 +14,19 @@ let proto = Paper.prototype
 // gradients
 ;(function () {
   // gradients' helpers
-  /*\
-         * SnapElement.stops
-         [ method ]
-         **
-         * Only for gradients!
-         * Returns array of gradient stops elements.
-         = (array) the stops array.
-        \*/
+  /**
+   * Only for gradients!
+   * Returns array of gradient stops elements.
+   */
   function Gstops() {
     return this.selectAll('stop')
   }
-  /*\
-         * SnapElement.addStop
-         [ method ]
-         **
-         * Only for gradients!
-         * Adds another stop to the gradient.
-         - color (string) stops color
-         - offset (number) stops offset 0..100
-         = (object) gradient element
-        \*/
+  /**
+   * Only for gradients!
+   * Adds another stop to the gradient.
+   * color (string) stops color
+   * offset (number) stops offset 0..100
+   */
   function GaddStop(color, offset) {
     let stop = $('stop'),
       attr = {
@@ -75,17 +67,14 @@ let proto = Paper.prototype
       return Snap._.box(cx - r, cy - r, r * 2, r * 2)
     }
   }
-  /*\
-         * SnapElement.setStops
-         [ method ]
-         **
-         * Only for gradients!
-         * Updates stops of the gradient based on passed gradient descriptor. See @Ppaer.gradient
-         - str (string) gradient descriptor part after `()`.
-         = (object) gradient element
-         | let g = paper.gradient("l(0, 0, 1, 1)#000-#f00-#fff");
-         | g.setStops("#fff-#000-#f00-#fc0");
-        \*/
+  /**
+   * Only for gradients!
+   * Updates stops of the gradient based on passed gradient descriptor. See @Ppaer.gradient
+   - str (string) gradient descriptor part after `()`.
+    = (object) gradient element
+    | let g = paper.gradient("l(0, 0, 1, 1)#000-#f00-#fff");
+    | g.setStops("#fff-#000-#f00-#fc0");
+  */
   function GsetStops(str) {
     let grad = str,
       stops = this.stops()
diff --git a/src/path.js b/src/path.js
index 3af80b8..bfd288b 100644
--- a/src/path.js
+++ b/src/path.js
@@ -1,29 +1,21 @@
-// Copyright (c) 2013 Adobe Systems Incorporated. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-import { Snap, SnapElement, Paper, Fragment, unit2px } from './svg.js'
+/**
+ * {}
+ * @author yutent<yutent.io@gmail.com>
+ * @date 2024/03/08 10:57:37
+ */
+
+import { Snap, SnapElement, unit2px } from './svg.js'
 import { is, clone, cacher } from './utils.js'
 
 let elproto = SnapElement.prototype,
   has = 'hasOwnProperty',
   p2s = /,?([a-z]),?/gi,
-  toFloat = parseFloat,
-  math = Math,
-  PI = math.PI,
-  mmin = math.min,
-  mmax = math.max,
-  pow = math.pow,
-  abs = math.abs
+  PI = Math.PI,
+  mmin = Math.min,
+  mmax = Math.max,
+  pow = Math.pow,
+  abs = Math.abs
+
 function paths(ps) {
   let p = (paths.ps = paths.ps || {})
   if (p[ps]) {
@@ -34,11 +26,12 @@ function paths(ps) {
     }
   }
   setTimeout(function () {
-    for (let key in p)
+    for (let key in p) {
       if (p[has](key) && key != ps) {
         p[key].sleep--
         !p[key].sleep && delete p[key]
       }
+    }
   })
   return p[ps]
 }
@@ -63,9 +56,9 @@ function box(x, y, width, height) {
     y2: y + height,
     cx: x + width / 2,
     cy: y + height / 2,
-    r1: math.min(width, height) / 2,
-    r2: math.max(width, height) / 2,
-    r0: math.sqrt(width * width + height * height) / 2,
+    r1: Math.min(width, height) / 2,
+    r2: Math.max(width, height) / 2,
+    r0: Math.sqrt(width * width + height * height) / 2,
     path: rectPath(x, y, width, height),
     vb: [x, y, width, height].join(' ')
   }
@@ -221,7 +214,7 @@ function findDotsAtSegment(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t) {
     ay = t1 * p1y + t * c1y,
     cx = t1 * c2x + t * p2x,
     cy = t1 * c2y + t * p2y,
-    alpha = 90 - (math.atan2(mx - nx, my - ny) * 180) / PI
+    alpha = 90 - (Math.atan2(mx - nx, my - ny) * 180) / PI
   // (mx > nx || my < ny) && (alpha += 180);
   return {
     x: x,
@@ -297,7 +290,7 @@ function bezlen(x1, y1, x2, y2, x3, y3, x4, y4, z) {
       xbase = base3(ct, x1, x2, x3, x4),
       ybase = base3(ct, y1, y2, y3, y4),
       comb = xbase * xbase + ybase * ybase
-    sum += Cvalues[i] * math.sqrt(comb)
+    sum += Cvalues[i] * Math.sqrt(comb)
   }
   return z2 * sum
 }
@@ -863,15 +856,15 @@ function a2c(
   y2,
   recursive
 ) {
-  // for more information of where this math came from visit:
+  // for more information of where this Math came from visit:
   // http://www.w3.org/TR/SVG11/implnote.html#ArcImplementationNotes
   let _120 = (PI * 120) / 180,
     rad = (PI / 180) * (+angle || 0),
     res = [],
     xy,
     rotate = cacher(function (x, y, rad) {
-      let X = x * math.cos(rad) - y * math.sin(rad),
-        Y = x * math.sin(rad) + y * math.cos(rad)
+      let X = x * Math.cos(rad) - y * Math.sin(rad),
+        Y = x * Math.sin(rad) + y * Math.cos(rad)
       return { x: X, y: Y }
     })
   if (!rx || !ry) {
@@ -884,13 +877,13 @@ function a2c(
     xy = rotate(x2, y2, -rad)
     x2 = xy.x
     y2 = xy.y
-    let cos = math.cos((PI / 180) * angle),
-      sin = math.sin((PI / 180) * angle),
+    let cos = Math.cos((PI / 180) * angle),
+      sin = Math.sin((PI / 180) * angle),
       x = (x1 - x2) / 2,
       y = (y1 - y2) / 2
     let h = (x * x) / (rx * rx) + (y * y) / (ry * ry)
     if (h > 1) {
-      h = math.sqrt(h)
+      h = Math.sqrt(h)
       rx = h * rx
       ry = h * ry
     }
@@ -898,7 +891,7 @@ function a2c(
       ry2 = ry * ry,
       k =
         (large_arc_flag == sweep_flag ? -1 : 1) *
-        math.sqrt(
+        Math.sqrt(
           abs(
             (rx2 * ry2 - rx2 * y * y - ry2 * x * x) /
               (rx2 * y * y + ry2 * x * x)
@@ -906,8 +899,8 @@ function a2c(
         ),
       cx = (k * rx * y) / ry + (x1 + x2) / 2,
       cy = (k * -ry * x) / rx + (y1 + y2) / 2,
-      f1 = math.asin(((y1 - cy) / ry).toFixed(9)),
-      f2 = math.asin(((y2 - cy) / ry).toFixed(9))
+      f1 = Math.asin(((y1 - cy) / ry).toFixed(9)),
+      f2 = Math.asin(((y2 - cy) / ry).toFixed(9))
 
     f1 = x1 < cx ? PI - f1 : f1
     f2 = x2 < cx ? PI - f2 : f2
@@ -931,8 +924,8 @@ function a2c(
       x2old = x2,
       y2old = y2
     f2 = f1 + _120 * (sweep_flag && f2 > f1 ? 1 : -1)
-    x2 = cx + rx * math.cos(f2)
-    y2 = cy + ry * math.sin(f2)
+    x2 = cx + rx * Math.cos(f2)
+    y2 = cy + ry * Math.sin(f2)
     res = a2c(x2, y2, rx, ry, angle, 0, sweep_flag, x2old, y2old, [
       f2,
       f2old,
@@ -941,11 +934,11 @@ function a2c(
     ])
   }
   df = f2 - f1
-  let c1 = math.cos(f1),
-    s1 = math.sin(f1),
-    c2 = math.cos(f2),
-    s2 = math.sin(f2),
-    t = math.tan(df / 4),
+  let c1 = Math.cos(f1),
+    s1 = Math.sin(f1),
+    c2 = Math.cos(f2),
+    s2 = Math.sin(f2),
+    t = Math.tan(df / 4),
     hx = (4 / 3) * rx * t,
     hy = (4 / 3) * ry * t,
     m1 = [x1, y1],
@@ -1020,7 +1013,7 @@ function curveDim(x0, y0, x1, y1, x2, y2, x3, y3) {
       continue
     }
     b2ac = b * b - 4 * c * a
-    sqrtb2ac = math.sqrt(b2ac)
+    sqrtb2ac = Math.sqrt(b2ac)
     if (b2ac < 0) {
       continue
     }
@@ -1199,10 +1192,10 @@ function path2curve(path, path2) {
       seg2len = p2 && seg2.length
     attrs.x = seg[seglen - 2]
     attrs.y = seg[seglen - 1]
-    attrs.bx = toFloat(seg[seglen - 4]) || attrs.x
-    attrs.by = toFloat(seg[seglen - 3]) || attrs.y
-    attrs2.bx = p2 && (toFloat(seg2[seg2len - 4]) || attrs2.x)
-    attrs2.by = p2 && (toFloat(seg2[seg2len - 3]) || attrs2.y)
+    attrs.bx = +seg[seglen - 4] || attrs.x
+    attrs.by = +seg[seglen - 3] || attrs.y
+    attrs2.bx = p2 && (+seg2[seg2len - 4] || attrs2.x)
+    attrs2.by = p2 && (+seg2[seg2len - 3] || attrs2.y)
     attrs2.x = p2 && seg2[seg2len - 2]
     attrs2.y = p2 && seg2[seg2len - 1]
   }
@@ -1272,46 +1265,36 @@ function catmullRom2bezier(crp, z) {
 // export
 Snap.path = paths
 
-/*\
-     * Snap.path.getTotalLength
-     [ method ]
-     **
-     * Returns the length of the given path in pixels
-     **
-     - path (string) SVG path string
-     **
-     = (number) length
-    \*/
+/**
+ * Returns the length of the given path in pixels
+ **
+ * path (string) SVG path string
+ **
+ */
 Snap.path.getTotalLength = getTotalLength
-/*\
-     * Snap.path.getPointAtLength
-     [ method ]
-     **
-     * Returns the coordinates of the point located at the given length along the given path
-     **
-     - path (string) SVG path string
-     - length (number) length, in pixels, from the start of the path, excluding non-rendering jumps
-     **
-     = (object) representation of the point:
-     o {
-     o     x: (number) x coordinate,
-     o     y: (number) y coordinate,
-     o     alpha: (number) angle of derivative
-     o }
-    \*/
+/**
+ * Returns the coordinates of the point located at the given length along the given path
+ **
+  * path (string) SVG path string
+  * length (number) length, in pixels, from the start of the path, excluding non-rendering jumps
+  **
+  = (object) representation of the point:
+  {
+      x: (number) x coordinate,
+      y: (number) y coordinate,
+      alpha: (number) angle of derivative
+  }
+*/
 Snap.path.getPointAtLength = getPointAtLength
-/*\
-     * Snap.path.getSubpath
-     [ method ]
-     **
-     * Returns the subpath of a given path between given start and end lengths
-     **
-     - path (string) SVG path string
-     - from (number) length, in pixels, from the start of the path to the start of the segment
-     - to (number) length, in pixels, from the start of the path to the end of the segment
-     **
-     = (string) path string definition for the segment
-    \*/
+/**
+ * Returns the subpath of a given path between given start and end lengths
+ **
+  - path (string) SVG path string
+  - from (number) length, in pixels, from the start of the path to the start of the segment
+  - to (number) length, in pixels, from the start of the path to the end of the segment
+  **
+  = (string) path string definition for the segment
+*/
 Snap.path.getSubpath = function (path, from, to) {
   if (this.getTotalLength(path) - to < 1e-6) {
     return getSubpathsAtLength(path, from).end
@@ -1319,133 +1302,113 @@ Snap.path.getSubpath = function (path, from, to) {
   let a = getSubpathsAtLength(path, to, 1)
   return from ? getSubpathsAtLength(a, from).end : a
 }
-/*\
-     * SnapElement.getTotalLength
-     [ method ]
-     **
-     * Returns the length of the path in pixels (only works for `path` elements)
-     = (number) length
-    \*/
+/**
+ * Returns the length of the path in pixels (only works for `path` elements)
+ = (number) length
+*/
 elproto.getTotalLength = function () {
   if (this.node.getTotalLength) {
     return this.node.getTotalLength()
   }
 }
 // SIERRA SnapElement.getPointAtLength()/SnapElement.getTotalLength(): If a <path> is broken into different segments, is the jump distance to the new coordinates set by the _M_ or _m_ commands calculated as part of the path's total length?
-/*\
-     * SnapElement.getPointAtLength
-     [ method ]
-     **
-     * Returns coordinates of the point located at the given length on the given path (only works for `path` elements)
-     **
-     - length (number) length, in pixels, from the start of the path, excluding non-rendering jumps
-     **
-     = (object) representation of the point:
-     o {
-     o     x: (number) x coordinate,
-     o     y: (number) y coordinate,
-     o     alpha: (number) angle of derivative
-     o }
-    \*/
+/**
+ * Returns coordinates of the point located at the given length on the given path (only works for `path` elements)
+ **
+  - length (number) length, in pixels, from the start of the path, excluding non-rendering jumps
+  **
+  = (object) representation of the point:
+   {
+    x: (number) x coordinate,
+    y: (number) y coordinate,
+    alpha: (number) angle of derivative
+   }
+*/
 elproto.getPointAtLength = function (length) {
   return getPointAtLength(this.attr('d'), length)
 }
 // SIERRA SnapElement.getSubpath(): Similar to the problem for SnapElement.getPointAtLength(). Unclear how this would work for a segmented path. Overall, the concept of _subpath_ and what I'm calling a _segment_ (series of non-_M_ or _Z_ commands) is unclear.
-/*\
-     * SnapElement.getSubpath
-     [ method ]
-     **
-     * Returns subpath of a given element from given start and end lengths (only works for `path` elements)
-     **
-     - from (number) length, in pixels, from the start of the path to the start of the segment
-     - to (number) length, in pixels, from the start of the path to the end of the segment
-     **
-     = (string) path string definition for the segment
-    \*/
+/**
+ * Returns subpath of a given element from given start and end lengths (only works for `path` elements)
+ **
+  - from (number) length, in pixels, from the start of the path to the start of the segment
+  - to (number) length, in pixels, from the start of the path to the end of the segment
+  **
+  = (string) path string definition for the segment
+*/
 elproto.getSubpath = function (from, to) {
   return Snap.path.getSubpath(this.attr('d'), from, to)
 }
 Snap._.box = box
-/*\
-     * Snap.path.findDotsAtSegment
-     [ method ]
-     **
-     * Utility method
-     **
-     * Finds dot coordinates on the given cubic beziér curve at the given t
-     - p1x (number) x of the first point of the curve
-     - p1y (number) y of the first point of the curve
-     - c1x (number) x of the first anchor of the curve
-     - c1y (number) y of the first anchor of the curve
-     - c2x (number) x of the second anchor of the curve
-     - c2y (number) y of the second anchor of the curve
-     - p2x (number) x of the second point of the curve
-     - p2y (number) y of the second point of the curve
-     - t (number) position on the curve (0..1)
-     = (object) point information in format:
-     o {
-     o     x: (number) x coordinate of the point,
-     o     y: (number) y coordinate of the point,
-     o     m: {
-     o         x: (number) x coordinate of the left anchor,
-     o         y: (number) y coordinate of the left anchor
-     o     },
-     o     n: {
-     o         x: (number) x coordinate of the right anchor,
-     o         y: (number) y coordinate of the right anchor
-     o     },
-     o     start: {
-     o         x: (number) x coordinate of the start of the curve,
-     o         y: (number) y coordinate of the start of the curve
-     o     },
-     o     end: {
-     o         x: (number) x coordinate of the end of the curve,
-     o         y: (number) y coordinate of the end of the curve
-     o     },
-     o     alpha: (number) angle of the curve derivative at the point
-     o }
-    \*/
+/**
+ * Utility method
+ **
+  * Finds dot coordinates on the given cubic beziér curve at the given t
+  - p1x (number) x of the first point of the curve
+  - p1y (number) y of the first point of the curve
+  - c1x (number) x of the first anchor of the curve
+  - c1y (number) y of the first anchor of the curve
+  - c2x (number) x of the second anchor of the curve
+  - c2y (number) y of the second anchor of the curve
+  - p2x (number) x of the second point of the curve
+  - p2y (number) y of the second point of the curve
+  - t (number) position on the curve (0..1)
+  = (object) point information in format:
+   {
+      x: (number) x coordinate of the point,
+      y: (number) y coordinate of the point,
+      m: {
+          x: (number) x coordinate of the left anchor,
+          y: (number) y coordinate of the left anchor
+      },
+      n: {
+          x: (number) x coordinate of the right anchor,
+          y: (number) y coordinate of the right anchor
+      },
+      start: {
+          x: (number) x coordinate of the start of the curve,
+          y: (number) y coordinate of the start of the curve
+      },
+      end: {
+          x: (number) x coordinate of the end of the curve,
+          y: (number) y coordinate of the end of the curve
+      },
+      alpha: (number) angle of the curve derivative at the point
+   }
+*/
 Snap.path.findDotsAtSegment = findDotsAtSegment
-/*\
-     * Snap.path.bezierBBox
-     [ method ]
-     **
-     * Utility method
-     **
-     * Returns the bounding box of a given cubic beziér curve
-     - p1x (number) x of the first point of the curve
-     - p1y (number) y of the first point of the curve
-     - c1x (number) x of the first anchor of the curve
-     - c1y (number) y of the first anchor of the curve
-     - c2x (number) x of the second anchor of the curve
-     - c2y (number) y of the second anchor of the curve
-     - p2x (number) x of the second point of the curve
-     - p2y (number) y of the second point of the curve
-     * or
-     - bez (array) array of six points for beziér curve
-     = (object) bounding box
-     o {
-     o     x: (number) x coordinate of the left top point of the box,
-     o     y: (number) y coordinate of the left top point of the box,
-     o     x2: (number) x coordinate of the right bottom point of the box,
-     o     y2: (number) y coordinate of the right bottom point of the box,
-     o     width: (number) width of the box,
-     o     height: (number) height of the box
-     o }
-    \*/
+/**
+ **
+  * Returns the bounding box of a given cubic beziér curve
+  - p1x (number) x of the first point of the curve
+  - p1y (number) y of the first point of the curve
+  - c1x (number) x of the first anchor of the curve
+  - c1y (number) y of the first anchor of the curve
+  - c2x (number) x of the second anchor of the curve
+  - c2y (number) y of the second anchor of the curve
+  - p2x (number) x of the second point of the curve
+  - p2y (number) y of the second point of the curve
+  * or
+  - bez (array) array of six points for beziér curve
+  = (object) bounding box
+  o {
+  o     x: (number) x coordinate of the left top point of the box,
+  o     y: (number) y coordinate of the left top point of the box,
+  o     x2: (number) x coordinate of the right bottom point of the box,
+  o     y2: (number) y coordinate of the right bottom point of the box,
+  o     width: (number) width of the box,
+  o     height: (number) height of the box
+  o }
+*/
 Snap.path.bezierBBox = bezierBBox
-/*\
-     * Snap.path.isPointInsideBBox
-     [ method ]
-     **
-     * Utility method
-     **
-     * Returns `true` if given point is inside bounding box
-     - bbox (string) bounding box
-     - x (string) x coordinate of the point
-     - y (string) y coordinate of the point
-     = (boolean) `true` if point is inside
-    \*/
+/**
+ **
+  * Returns `true` if given point is inside bounding box
+  - bbox (string) bounding box
+  - x (string) x coordinate of the point
+  - y (string) y coordinate of the point
+  = (boolean) `true` if point is inside
+*/
 Snap.path.isPointInsideBBox = isPointInsideBBox
 Snap.closest = function (x, y, X, Y) {
   let r = 100,
@@ -1506,108 +1469,75 @@ Snap.closest = function (x, y, X, Y) {
      = (boolean) `true` if bounding boxes intersect
     \*/
 Snap.path.isBBoxIntersect = isBBoxIntersect
-/*\
-     * Snap.path.intersection
-     [ method ]
-     **
-     * Utility method
-     **
-     * Finds intersections of two paths
-     - path1 (string) path string
-     - path2 (string) path string
-     = (array) dots of intersection
-     o [
-     o     {
-     o         x: (number) x coordinate of the point,
-     o         y: (number) y coordinate of the point,
-     o         t1: (number) t value for segment of path1,
-     o         t2: (number) t value for segment of path2,
-     o         segment1: (number) order number for segment of path1,
-     o         segment2: (number) order number for segment of path2,
-     o         bez1: (array) eight coordinates representing beziér curve for the segment of path1,
-     o         bez2: (array) eight coordinates representing beziér curve for the segment of path2
-     o     }
-     o ]
-    \*/
+/**
+ * Finds intersections of two paths
+ - path1 (string) path string
+  - path2 (string) path string
+  = (array) dots of intersection
+  o [
+  o     {
+  o         x: (number) x coordinate of the point,
+  o         y: (number) y coordinate of the point,
+  o         t1: (number) t value for segment of path1,
+  o         t2: (number) t value for segment of path2,
+  o         segment1: (number) order number for segment of path1,
+  o         segment2: (number) order number for segment of path2,
+  o         bez1: (array) eight coordinates representing beziér curve for the segment of path1,
+  o         bez2: (array) eight coordinates representing beziér curve for the segment of path2
+  o     }
+  o ]
+*/
 Snap.path.intersection = pathIntersection
 Snap.path.intersectionNumber = pathIntersectionNumber
-/*\
-     * Snap.path.isPointInside
-     [ method ]
-     **
-     * Utility method
-     **
-     * Returns `true` if given point is inside a given closed path.
-     *
-     * Note: fill mode doesn’t affect the result of this method.
-     - path (string) path string
-     - x (number) x of the point
-     - y (number) y of the point
-     = (boolean) `true` if point is inside the path
-    \*/
+/**
+ * Returns `true` if given point is inside a given closed path.
+ *
+ * Note: fill mode doesn’t affect the result of this method.
+ - path (string) path string
+  - x (number) x of the point
+  - y (number) y of the point
+  = (boolean) `true` if point is inside the path
+*/
 Snap.path.isPointInside = isPointInsidePath
-/*\
-     * Snap.path.getBBox
-     [ method ]
-     **
-     * Utility method
-     **
-     * Returns the bounding box of a given path
-     - path (string) path string
-     = (object) bounding box
-     o {
-     o     x: (number) x coordinate of the left top point of the box,
-     o     y: (number) y coordinate of the left top point of the box,
-     o     x2: (number) x coordinate of the right bottom point of the box,
-     o     y2: (number) y coordinate of the right bottom point of the box,
-     o     width: (number) width of the box,
-     o     height: (number) height of the box
-     o }
-    \*/
+/**
+ * Returns the bounding box of a given path
+ - path (string) path string
+  = (object) bounding box
+  o {
+  o     x: (number) x coordinate of the left top point of the box,
+  o     y: (number) y coordinate of the left top point of the box,
+  o     x2: (number) x coordinate of the right bottom point of the box,
+  o     y2: (number) y coordinate of the right bottom point of the box,
+  o     width: (number) width of the box,
+  o     height: (number) height of the box
+  o }
+*/
 Snap.path.getBBox = pathBBox
 Snap.path.get = getPath
-/*\
-     * Snap.path.toRelative
-     [ method ]
-     **
-     * Utility method
-     **
-     * Converts path coordinates into relative values
-     - path (string) path string
-     = (array) path string
-    \*/
+/**
+ * Converts path coordinates into relative values
+ - path (string) path string
+  = (array) path string
+*/
 Snap.path.toRelative = pathToRelative
-/*\
-     * Snap.path.toAbsolute
-     [ method ]
-     **
-     * Utility method
-     **
-     * Converts path coordinates into absolute values
-     - path (string) path string
-     = (array) path string
-    \*/
+/**
+ * Converts path coordinates into absolute values
+ - path (string) path string
+  = (array) path string
+*/
 Snap.path.toAbsolute = pathToAbsolute
-/*\
-     * Snap.path.toCubic
-     [ method ]
-     **
-     * Utility method
-     **
-     * Converts path to a new path where all segments are cubic beziér curves
-     - pathString (string|array) path string or array of segments
-     = (array) array of segments
-    \*/
+/**
+ * Converts path to a new path where all segments are cubic beziér curves
+ - pathString (string|array) path string or array of segments
+  = (array) array of segments
+*/
 Snap.path.toCubic = path2curve
-/*\
-     * Snap.path.map
-     [ method ]
-     **
-     * Transform the path string with the given matrix
-     - path (string) path string
-     - matrix (object) see @Matrix
-     = (string) transformed path string
-    \*/
+/**
+ * Transform the path string with the given matrix
+ - path (string) path string
+  - matrix (object) see @Matrix
+  = (string) transformed path string
+*/
 Snap.path.map = mapPath
 Snap.path.toString = toString
 Snap.path.clone = pathClone