Merge branch 'master' into docs_derp

Conflicts:
	docs/assets/css/docs.css

11 files changed, 331 insertions, 171 deletions

diff --git a/less/.csslintrc b/less/.csslintrc
index 8cf2f846d..005b86236 100644
--- a/less/.csslintrc
+++ b/less/.csslintrc
@@ -11,6 +11,7 @@
   "outline-none": false,
   "qualified-headings": false,
   "regex-selectors": false,
+  "shorthand": false,
   "text-indent": false,
   "unique-headings": false,
   "universal-selector": false,
diff --git a/less/buttons.less b/less/buttons.less
index b728f332c..4858a8aea 100644
--- a/less/buttons.less
+++ b/less/buttons.less
@@ -60,6 +60,10 @@
 .btn-success {
   .button-variant(@btn-success-color; @btn-success-bg; @btn-success-border);
 }
+// Info appears as blue-green
+.btn-info {
+  .button-variant(@btn-info-color; @btn-info-bg; @btn-info-border);
+}
 // Warning appears as orange
 .btn-warning {
   .button-variant(@btn-warning-color; @btn-warning-bg; @btn-warning-border);
@@ -68,10 +72,6 @@
 .btn-danger {
   .button-variant(@btn-danger-color; @btn-danger-bg; @btn-danger-border);
 }
-// Info appears as blue-green
-.btn-info {
-  .button-variant(@btn-info-color; @btn-info-bg; @btn-info-border);
-}
 
 
 // Link buttons
diff --git a/less/forms.less b/less/forms.less
index 34f970e2e..0f592252a 100644
--- a/less/forms.less
+++ b/less/forms.less
@@ -52,6 +52,12 @@ input[type="file"] {
   display: block;
 }
 
+// Make range inputs behave like textual form controls
+input[type="range"] {
+  display: block;
+  width: 100%;
+}
+
 // Make multiple select elements height not fixed
 select[multiple],
 select[size] {
@@ -276,15 +282,15 @@ input[type="checkbox"],
 }
 
 // Feedback states
+.has-success {
+  .form-control-validation(@state-success-text; @state-success-text; @state-success-bg);
+}
 .has-warning {
   .form-control-validation(@state-warning-text; @state-warning-text; @state-warning-bg);
 }
 .has-error {
   .form-control-validation(@state-danger-text; @state-danger-text; @state-danger-bg);
 }
-.has-success {
-  .form-control-validation(@state-success-text; @state-success-text; @state-success-bg);
-}
 
 
 // Static form control text
diff --git a/less/glyphicons.less b/less/glyphicons.less
index 29ce1c071..789c5e7f4 100644
--- a/less/glyphicons.less
+++ b/less/glyphicons.less
@@ -14,7 +14,7 @@
   src: ~"url('@{icon-font-path}@{icon-font-name}.eot?#iefix') format('embedded-opentype')",
        ~"url('@{icon-font-path}@{icon-font-name}.woff') format('woff')",
        ~"url('@{icon-font-path}@{icon-font-name}.ttf') format('truetype')",
-       ~"url('@{icon-font-path}@{icon-font-name}.svg#glyphicons-halflingsregular') format('svg')";
+       ~"url('@{icon-font-path}@{icon-font-name}.svg#@{icon-font-svg-id}') format('svg')";
 }
 
 // Catchall baseclass
diff --git a/less/list-group.less b/less/list-group.less
index ed3bfa5a5..3343f8e5e 100644
--- a/less/list-group.less
+++ b/less/list-group.less
@@ -91,9 +91,9 @@ a.list-group-item {
 // Organizationally, this must come after the `:hover` states.
 
 .list-group-item-variant(success; @state-success-bg; @state-success-text);
+.list-group-item-variant(info; @state-info-bg; @state-info-text);
 .list-group-item-variant(warning; @state-warning-bg; @state-warning-text);
 .list-group-item-variant(danger; @state-danger-bg; @state-danger-text);
-.list-group-item-variant(info; @state-info-bg; @state-info-text);
 
 
 // Custom content options
diff --git a/less/mixins.less b/less/mixins.less
index 31992feca..3af3c8208 100644
--- a/less/mixins.less
+++ b/less/mixins.less
@@ -851,7 +851,7 @@
     border-color: @border-color;
     background-color: @background-color;
   }
-  // Optional feedack icon
+  // Optional feedback icon
   .form-control-feedback {
     color: @text-color;
   }
diff --git a/less/panels.less b/less/panels.less
index 8de915c7e..bf2cb768a 100644
--- a/less/panels.less
+++ b/less/panels.less
@@ -59,7 +59,7 @@
   > .table,
   > .table-responsive > .table {
     margin-bottom: 0;
-    
+
     > tbody:last-child,
     > tfoot:last-child {
       > tr:last-child {
@@ -185,12 +185,12 @@
 .panel-success {
   .panel-variant(@panel-success-border; @panel-success-text; @panel-success-heading-bg; @panel-success-border);
 }
+.panel-info {
+  .panel-variant(@panel-info-border; @panel-info-text; @panel-info-heading-bg; @panel-info-border);
+}
 .panel-warning {
   .panel-variant(@panel-warning-border; @panel-warning-text; @panel-warning-heading-bg; @panel-warning-border);
 }
 .panel-danger {
   .panel-variant(@panel-danger-border; @panel-danger-text; @panel-danger-heading-bg; @panel-danger-border);
 }
-.panel-info {
-  .panel-variant(@panel-info-border; @panel-info-text; @panel-info-heading-bg; @panel-info-border);
-}
diff --git a/less/tables.less b/less/tables.less
index c54b0129c..c41989c04 100644
--- a/less/tables.less
+++ b/less/tables.less
@@ -157,9 +157,9 @@ table {
 // Generate the contextual variants
 .table-row-variant(active; @table-bg-active);
 .table-row-variant(success; @state-success-bg);
+.table-row-variant(info; @state-info-bg);
 .table-row-variant(warning; @state-warning-bg);
 .table-row-variant(danger; @state-danger-bg);
-.table-row-variant(info; @state-info-bg);
 
 
 // Responsive tables
diff --git a/less/theme.less b/less/theme.less
index 0addce3f2..6f957fb39 100644
--- a/less/theme.less
+++ b/less/theme.less
@@ -63,9 +63,9 @@
 .btn-default { .btn-styles(@btn-default-bg); text-shadow: 0 1px 0 #fff; border-color: #ccc; }
 .btn-primary { .btn-styles(@btn-primary-bg); }
 .btn-success { .btn-styles(@btn-success-bg); }
+.btn-info    { .btn-styles(@btn-info-bg); }
 .btn-warning { .btn-styles(@btn-warning-bg); }
 .btn-danger  { .btn-styles(@btn-danger-bg); }
-.btn-info    { .btn-styles(@btn-info-bg); }
 
 
 
diff --git a/less/type.less b/less/type.less
index 585584470..91496dc8c 100644
--- a/less/type.less
+++ b/less/type.less
@@ -97,18 +97,6 @@ cite    { font-style: normal; }
     color: darken(@brand-primary, 10%);
   }
 }
-.text-warning {
-  color: @state-warning-text;
-  &:hover {
-    color: darken(@state-warning-text, 10%);
-  }
-}
-.text-danger {
-  color: @state-danger-text;
-  &:hover {
-    color: darken(@state-danger-text, 10%);
-  }
-}
 .text-success {
   color: @state-success-text;
   &:hover {
@@ -121,6 +109,18 @@ cite    { font-style: normal; }
     color: darken(@state-info-text, 10%);
   }
 }
+.text-warning {
+  color: @state-warning-text;
+  &:hover {
+    color: darken(@state-warning-text, 10%);
+  }
+}
+.text-danger {
+  color: @state-danger-text;
+  &:hover {
+    color: darken(@state-danger-text, 10%);
+  }
+}
 
 // Contextual backgrounds
 // For now we'll leave these alongside the text classes until v4 when we can
@@ -134,18 +134,6 @@ cite    { font-style: normal; }
     background-color: darken(@brand-primary, 10%);
   }
 }
-.bg-warning {
-  background-color: @state-warning-bg;
-  a&:hover {
-    background-color: darken(@state-warning-bg, 10%);
-  }
-}
-.bg-danger {
-  background-color: @state-danger-bg;
-  a&:hover {
-    background-color: darken(@state-danger-bg, 10%);
-  }
-}
 .bg-success {
   background-color: @state-success-bg;
   a&:hover {
@@ -158,6 +146,18 @@ cite    { font-style: normal; }
     background-color: darken(@state-info-bg, 10%);
   }
 }
+.bg-warning {
+  background-color: @state-warning-bg;
+  a&:hover {
+    background-color: darken(@state-warning-bg, 10%);
+  }
+}
+.bg-danger {
+  background-color: @state-danger-bg;
+  a&:hover {
+    background-color: darken(@state-danger-bg, 10%);
+  }
+}
 
 
 // Page header
diff --git a/less/variables.less b/less/variables.less
index 8e1a702ea..106a73457 100644
--- a/less/variables.less
+++ b/less/variables.less
@@ -3,11 +3,9 @@
 // --------------------------------------------------
 
 
-// Global values
-// --------------------------------------------------
-
-// Grays
-// -------------------------
+//== Colors
+//
+//## Gray and brand colors for use across Bootstrap.
 
 @gray-darker:            lighten(#000, 13.5%); // #222
 @gray-dark:              lighten(#000, 20%);   // #333
@@ -15,32 +13,35 @@
 @gray-light:             lighten(#000, 60%);   // #999
 @gray-lighter:           lighten(#000, 93.5%); // #eee
 
-// Brand colors
-// -------------------------
-
 @brand-primary:         #428bca;
 @brand-success:         #5cb85c;
+@brand-info:            #5bc0de;
 @brand-warning:         #f0ad4e;
 @brand-danger:          #d9534f;
-@brand-info:            #5bc0de;
 
-// Scaffolding
-// -------------------------
 
+//== Scaffolding
+//
+// ## Settings for some of the most global styles.
+
+//** Background color for `<body>`.
 @body-bg:               #fff;
+//** Global text color on `<body>`.
 @text-color:            @gray-dark;
 
-// Links
-// -------------------------
-
+//** Global textual link color.
 @link-color:            @brand-primary;
+//** Link hover color set via `darken()` function.
 @link-hover-color:      darken(@link-color, 15%);
 
-// Typography
-// -------------------------
+
+//== Typography
+//
+//## Font, line-height, and color for body text, headings, and more.
 
 @font-family-sans-serif:  "Helvetica Neue", Helvetica, Arial, sans-serif;
 @font-family-serif:       Georgia, "Times New Roman", Times, serif;
+//** Default monospace fonts for `<code>`, `<kbd>`, and `<pre>`.
 @font-family-monospace:   Menlo, Monaco, Consolas, "Courier New", monospace;
 @font-family-base:        @font-family-sans-serif;
 
@@ -55,67 +56,84 @@
 @font-size-h5:            @font-size-base;
 @font-size-h6:            ceil((@font-size-base * 0.85)); // ~12px
 
+//** Unit-less `line-height` for use in components like buttons.
 @line-height-base:        1.428571429; // 20/14
+//** Computed "line-height" (`font-size` &times; `line-height`) for use with `margin`, `padding`, etc.
 @line-height-computed:    floor((@font-size-base * @line-height-base)); // ~20px
 
+//** By default, this inherits from the `<body>`.
 @headings-font-family:    inherit;
 @headings-font-weight:    500;
 @headings-line-height:    1.1;
 @headings-color:          inherit;
 
 
-// Iconography
-// -------------------------
+//-- Iconography
+//
+//## Specify custom locations of the include Glyphicons icon font. Useful for those including Bootstrap via Bower.
 
 @icon-font-path:          "../fonts/";
 @icon-font-name:          "glyphicons-halflings-regular";
+@icon-font-svg-id:				"glyphicons_halflingsregular";
 
+//== Components
+//
+//## Define common padding and border radius sizes and more. Values based on 14px text and 1.428 line-height (~20px to start).
 
-// Components
-// -------------------------
-// Based on 14px font-size and 1.428 line-height (~20px to start)
+@padding-base-vertical:     6px;
+@padding-base-horizontal:   12px;
 
-@padding-base-vertical:          6px;
-@padding-base-horizontal:        12px;
+@padding-large-vertical:    10px;
+@padding-large-horizontal:  16px;
 
-@padding-large-vertical:         10px;
-@padding-large-horizontal:       16px;
+@padding-small-vertical:    5px;
+@padding-small-horizontal:  10px;
 
-@padding-small-vertical:         5px;
-@padding-small-horizontal:       10px;
+@padding-xs-vertical:       1px;
+@padding-xs-horizontal:     5px;
 
-@padding-xs-vertical:            1px;
-@padding-xs-horizontal:          5px;
+@line-height-large:         1.33;
+@line-height-small:         1.5;
 
-@line-height-large:              1.33;
-@line-height-small:              1.5;
+@border-radius-base:        4px;
+@border-radius-large:       6px;
+@border-radius-small:       3px;
 
-@border-radius-base:             4px;
-@border-radius-large:            6px;
-@border-radius-small:            3px;
+//** Global color for active items (e.g., navs or dropdowns).
+@component-active-color:    #fff;
+//** Global background color for active items (e.g., navs or dropdowns).
+@component-active-bg:       @brand-primary;
 
-@component-active-color:         #fff;
-@component-active-bg:            @brand-primary;
+//** Width of the `border` for generating carets that indicator dropdowns.
+@caret-width-base:          4px;
+//** Carets increase slightly in size for larger components.
+@caret-width-large:         5px;
 
-@caret-width-base:               4px;
-@caret-width-large:              5px;
 
-// Tables
-// -------------------------
+//== Tables
+//
+//## Customizes the `.table` component with basic values, each used across all table variations.
 
-@table-cell-padding:                 8px;
-@table-condensed-cell-padding:       5px;
+//** Padding for `<th>`s and `<td>`s.
+@table-cell-padding:            8px;
+//** Padding for cells in `.table-condensed`.
+@table-condensed-cell-padding:  5px;
 
-@table-bg:                           transparent; // overall background-color
-@table-bg-accent:                    #f9f9f9; // for striping
-@table-bg-hover:                     #f5f5f5;
-@table-bg-active:                    @table-bg-hover;
+//** Default background color used for all tables.
+@table-bg:                      transparent;
+//** Background color used for `.table-striped`.
+@table-bg-accent:               #f9f9f9;
+//** Background color used for `.table-hover`.
+@table-bg-hover:                #f5f5f5;
+@table-bg-active:               @table-bg-hover;
 
-@table-border-color:                 #ddd; // table and cell border
+//** Border color for table and cell borders.
+@table-border-color:            #ddd;
 
 
-// Buttons
-// -------------------------
+//== Buttons
+//
+//## For each of Bootstrap's buttons, define text, background and border color.
 
 @btn-font-weight:                normal;
 
@@ -131,6 +149,10 @@
 @btn-success-bg:                 @brand-success;
 @btn-success-border:             darken(@btn-success-bg, 5%);
 
+@btn-info-color:                 #fff;
+@btn-info-bg:                    @brand-info;
+@btn-info-border:                darken(@btn-info-bg, 5%);
+
 @btn-warning-color:              #fff;
 @btn-warning-bg:                 @brand-warning;
 @btn-warning-border:             darken(@btn-warning-bg, 5%);
@@ -139,68 +161,87 @@
 @btn-danger-bg:                  @brand-danger;
 @btn-danger-border:              darken(@btn-danger-bg, 5%);
 
-@btn-info-color:                 #fff;
-@btn-info-bg:                    @brand-info;
-@btn-info-border:                darken(@btn-info-bg, 5%);
-
 @btn-link-disabled-color:        @gray-light;
 
 
-// Forms
-// -------------------------
+//== Forms
+//
+//##
 
+//** `<input>` background color
 @input-bg:                       #fff;
+//** `<input disabled>` background color
 @input-bg-disabled:              @gray-lighter;
 
+//** Text color for `<input>`s
 @input-color:                    @gray;
+//** `<input>` border color
 @input-border:                   #ccc;
+//** `<input>` border radius
 @input-border-radius:            @border-radius-base;
+//** Border color for inputs on focus
 @input-border-focus:             #66afe9;
 
+//** Placeholder text color
 @input-color-placeholder:        @gray-light;
 
+//** Default `.form-control` height
 @input-height-base:              (@line-height-computed + (@padding-base-vertical * 2) + 2);
+//** Large `.form-control` height
 @input-height-large:             (ceil(@font-size-large * @line-height-large) + (@padding-large-vertical * 2) + 2);
+//** Small `.form-control` height
 @input-height-small:             (floor(@font-size-small * @line-height-small) + (@padding-small-vertical * 2) + 2);
 
 @legend-color:                   @gray-dark;
 @legend-border-color:            #e5e5e5;
 
+//** Background color for textual input addons
 @input-group-addon-bg:           @gray-lighter;
+//** Border color for textual input addons
 @input-group-addon-border-color: @input-border;
 
 
-// Dropdowns
-// -------------------------
+//== Dropdowns
+//
+//## Dropdown menu container and contents.
 
+//** Background for the dropdown menu.
 @dropdown-bg:                    #fff;
+//** Dropdown menu `border-color`.
 @dropdown-border:                rgba(0,0,0,.15);
+//** Dropdown menu `border-color` **for IE8**.
 @dropdown-fallback-border:       #ccc;
+//** Divider color for between dropdown items.
 @dropdown-divider-bg:            #e5e5e5;
 
+//** Dropdown link text color.
 @dropdown-link-color:            @gray-dark;
+//** Hover color for dropdown links.
 @dropdown-link-hover-color:      darken(@gray-dark, 5%);
+//** Hover background for dropdown links.
 @dropdown-link-hover-bg:         #f5f5f5;
 
+//** Active dropdown menu item text color.
 @dropdown-link-active-color:     @component-active-color;
+//** Active dropdown menu item background color.
 @dropdown-link-active-bg:        @component-active-bg;
 
+//** Disabled dropdown menu item background color.
 @dropdown-link-disabled-color:   @gray-light;
 
+//** Text color for headers within dropdown menus.
 @dropdown-header-color:          @gray-light;
 
 // Note: Deprecated @dropdown-caret-color as of v3.1
 @dropdown-caret-color:           #000;
 
 
-// COMPONENT VARIABLES
-// --------------------------------------------------
-
-
-// Z-index master list
-// -------------------------
-// Used for a bird's eye view of components dependent on the z-axis
-// Try to avoid customizing these :)
+//-- Z-index master list
+//
+// Warning: Avoid customizing these values. They're used for a bird's eye view
+// of components dependent on the z-axis and are designed to all work together.
+//
+// Note: These variables are not generated into the Customizer.
 
 @zindex-navbar:            1000;
 @zindex-dropdown:          1000;
@@ -210,8 +251,10 @@
 @zindex-modal-background:  1040;
 @zindex-modal:             1050;
 
-// Media queries breakpoints
-// --------------------------------------------------
+
+//== Media queries breakpoints
+//
+//## Define the breakpoints at which your layout will change, adapting to different screen sizes.
 
 // Extra small screen / phone
 // Note: Deprecated @screen-xs and @screen-phone as of v3.0.1
@@ -243,24 +286,24 @@
 @screen-md-max:              (@screen-lg-min - 1);
 
 
-// Grid system
-// --------------------------------------------------
+//== Grid system
+//
+//## Define your custom responsive grid.
 
-// Number of columns in the grid system
+//** Number of columns in the grid.
 @grid-columns:              12;
-// Padding, to be divided by two and applied to the left and right of all columns
+//** Padding between columns. Gets divided in half for the left and right.
 @grid-gutter-width:         30px;
-
 // Navbar collapse
-
-// Point at which the navbar becomes uncollapsed
+//** Point at which the navbar becomes uncollapsed.
 @grid-float-breakpoint:     @screen-sm-min;
-// Point at which the navbar begins collapsing
+//** Point at which the navbar begins collapsing.
 @grid-float-breakpoint-max: (@grid-float-breakpoint - 1);
 
 
-// Navbar
-// -------------------------
+//== Navbar
+//
+//##
 
 // Basics of a navbar
 @navbar-height:                    50px;
@@ -294,7 +337,6 @@
 
 
 // Inverted navbar
-//
 // Reset inverted navbar basics
 @navbar-inverse-color:                      @gray-light;
 @navbar-inverse-bg:                         #222;
@@ -320,9 +362,11 @@
 @navbar-inverse-toggle-border-color:        #333;
 
 
-// Navs
-// -------------------------
+//== Navs
+//
+//##
 
+//=== Shared nav styles
 @nav-link-padding:                          10px 15px;
 @nav-link-hover-bg:                         @gray-lighter;
 
@@ -331,7 +375,7 @@
 
 @nav-open-link-hover-color:                 #fff;
 
-// Tabs
+//== Tabs
 @nav-tabs-border-color:                     #ddd;
 
 @nav-tabs-link-hover-border-color:          @gray-lighter;
@@ -343,14 +387,15 @@
 @nav-tabs-justified-link-border-color:            #ddd;
 @nav-tabs-justified-active-link-border-color:     @body-bg;
 
-// Pills
+//== Pills
 @nav-pills-border-radius:                   @border-radius-base;
 @nav-pills-active-link-hover-bg:            @component-active-bg;
 @nav-pills-active-link-hover-color:         @component-active-color;
 
 
-// Pagination
-// -------------------------
+//== Pagination
+//
+//##
 
 @pagination-color:                     @link-color;
 @pagination-bg:                        #fff;
@@ -369,8 +414,9 @@
 @pagination-disabled-border:           #ddd;
 
 
-// Pager
-// -------------------------
+//== Pager
+//
+//##
 
 @pager-bg:                             @pagination-bg;
 @pager-border:                         @pagination-border;
@@ -384,8 +430,9 @@
 @pager-disabled-color:                 @pagination-disabled-color;
 
 
-// Jumbotron
-// -------------------------
+//== Jumbotron
+//
+//##
 
 @jumbotron-padding:              30px;
 @jumbotron-color:                inherit;
@@ -394,8 +441,9 @@
 @jumbotron-font-size:            ceil((@font-size-base * 1.5));
 
 
-// Form states and alerts
-// -------------------------
+//== Form states and alerts
+//
+//## Define colors for form feedback states and, by default, alerts.
 
 @state-success-text:             #3c763d;
 @state-success-bg:               #dff0d8;
@@ -414,70 +462,112 @@
 @state-danger-border:            darken(spin(@state-danger-bg, -10), 5%);
 
 
-// Tooltips
-// -------------------------
+//== Tooltips
+//
+//##
+
+//** Tooltip max width
 @tooltip-max-width:           200px;
+//** Tooltip text color
 @tooltip-color:               #fff;
+//** Tooltip background color
 @tooltip-bg:                  #000;
 @tooltip-opacity:             .9;
 
+//** Tooltip arrow width
 @tooltip-arrow-width:         5px;
+//** Tooltip arrow color
 @tooltip-arrow-color:         @tooltip-bg;
 
 
-// Popovers
-// -------------------------
+//== Popovers
+//
+//##
+
+//** Popover body background color
 @popover-bg:                          #fff;
+//** Popover maximum width
 @popover-max-width:                   276px;
+//** Popover border color
 @popover-border-color:                rgba(0,0,0,.2);
+//** Popover fallback border color
 @popover-fallback-border-color:       #ccc;
 
+//** Popover title background color
 @popover-title-bg:                    darken(@popover-bg, 3%);
 
+//** Popover arrow width
 @popover-arrow-width:                 10px;
+//** Popover arrow color
 @popover-arrow-color:                 #fff;
 
+//** Popover outer arrow width
 @popover-arrow-outer-width:           (@popover-arrow-width + 1);
+//** Popover outer arrow color
 @popover-arrow-outer-color:           rgba(0,0,0,.25);
+//** Popover outer arrow fallback color
 @popover-arrow-outer-fallback-color:  #999;
 
 
-// Labels
-// -------------------------
+//== Labels
+//
+//##
 
+//** Default label background color
 @label-default-bg:            @gray-light;
+//** Primary label background color
 @label-primary-bg:            @brand-primary;
+//** Success label background color
 @label-success-bg:            @brand-success;
+//** Info label background color
 @label-info-bg:               @brand-info;
+//** Warning label background color
 @label-warning-bg:            @brand-warning;
+//** Danger label background color
 @label-danger-bg:             @brand-danger;
 
+//** Default label text color
 @label-color:                 #fff;
+//** Default text color of a linked label
 @label-link-hover-color:      #fff;
 
 
-// Modals
-// -------------------------
+//== Modals
+//
+//##
+
+//** Padding applied to the modal body
 @modal-inner-padding:         20px;
 
+//** Padding applied to the modal title
 @modal-title-padding:         15px;
+//** Modal title line-height
 @modal-title-line-height:     @line-height-base;
 
+//** Background color of modal content area
 @modal-content-bg:                             #fff;
+//** Modal content border color
 @modal-content-border-color:                   rgba(0,0,0,.2);
+//** Modal content border color <strong>for IE8</strong>
 @modal-content-fallback-border-color:          #999;
 
+//** Modal backdrop background color
 @modal-backdrop-bg:           #000;
+//** Modal backdrop opacity
 @modal-backdrop-opacity:      .5;
+//** Modal header border color
 @modal-header-border-color:   #e5e5e5;
+//** Modal footer border color
 @modal-footer-border-color:   @modal-header-border-color;
 
 @modal-lg:                    900px;
 @modal-sm:                    300px;
 
 
-// Alerts
-// -------------------------
+//== Alerts
+//
+//## Define alert colors, border radius, and padding.
+
 @alert-padding:               15px;
 @alert-border-radius:         @border-radius-base;
 @alert-link-font-weight:      bold;
@@ -499,39 +589,61 @@
 @alert-danger-border:         @state-danger-border;
 
 
-// Progress bars
-// -------------------------
+//== Progress bars
+//
+//##
+
+//** Background color of the whole progress component
 @progress-bg:                 #f5f5f5;
+//** Progress bar text color
 @progress-bar-color:          #fff;
 
+//** Default progress bar color
 @progress-bar-bg:             @brand-primary;
+//** Success progress bar color
 @progress-bar-success-bg:     @brand-success;
+//** Warning progress bar color
 @progress-bar-warning-bg:     @brand-warning;
+//** Danger progress bar color
 @progress-bar-danger-bg:      @brand-danger;
+//** Info progress bar color
 @progress-bar-info-bg:        @brand-info;
 
 
-// List group
-// -------------------------
+//== List group
+//
+//##
+
+//** Background color on `.list-group-item`
 @list-group-bg:                 #fff;
+//** `.list-group-item` border color
 @list-group-border:             #ddd;
+//** List group border radius
 @list-group-border-radius:      @border-radius-base;
 
+//** Background color of single list elements on hover
 @list-group-hover-bg:           #f5f5f5;
+//** Text color of active list elements
 @list-group-active-color:       @component-active-color;
+//** Background color of active list elements
 @list-group-active-bg:          @component-active-bg;
+//** Border color of active list elements
 @list-group-active-border:      @list-group-active-bg;
 @list-group-active-text-color:  lighten(@list-group-active-bg, 40%);
 
 @list-group-link-color:         #555;
 @list-group-link-heading-color: #333;
 
-// Panels
-// -------------------------
+
+//== Panels
+//
+//##
+
 @panel-bg:                    #fff;
 @panel-body-padding:          15px;
 @panel-border-radius:         @border-radius-base;
 
+//** Border color for elements within panels
 @panel-inner-border:          #ddd;
 @panel-footer-bg:             #f5f5f5;
 
@@ -547,6 +659,10 @@
 @panel-success-border:        @state-success-border;
 @panel-success-heading-bg:    @state-success-bg;
 
+@panel-info-text:             @state-info-text;
+@panel-info-border:           @state-info-border;
+@panel-info-heading-bg:       @state-info-bg;
+
 @panel-warning-text:          @state-warning-text;
 @panel-warning-border:        @state-warning-border;
 @panel-warning-heading-bg:    @state-warning-bg;
@@ -555,35 +671,46 @@
 @panel-danger-border:         @state-danger-border;
 @panel-danger-heading-bg:     @state-danger-bg;
 
-@panel-info-text:             @state-info-text;
-@panel-info-border:           @state-info-border;
-@panel-info-heading-bg:       @state-info-bg;
 
+//== Thumbnails
+//
+//##
 
-// Thumbnails
-// -------------------------
+//** Padding around the thumbnail image
 @thumbnail-padding:           4px;
+//** Thumbnail background color
 @thumbnail-bg:                @body-bg;
+//** Thumbnail border color
 @thumbnail-border:            #ddd;
+//** Thumbnail border radius
 @thumbnail-border-radius:     @border-radius-base;
 
+//** Custom text color for thumbnail captions
 @thumbnail-caption-color:     @text-color;
+//** Padding around the thumbnail caption
 @thumbnail-caption-padding:   9px;
 
 
-// Wells
-// -------------------------
+//== Wells
+//
+//##
+
 @well-bg:                     #f5f5f5;
 @well-border:                 darken(@well-bg, 7%);
 
 
-// Badges
-// -------------------------
+//== Badges
+//
+//##
+
 @badge-color:                 #fff;
+//** Linked badge text color on hover
 @badge-link-hover-color:      #fff;
 @badge-bg:                    @gray-light;
 
+//** Badge text color in active nav link
 @badge-active-color:          @link-color;
+//** Badge background color in active nav link
 @badge-active-bg:             #fff;
 
 @badge-font-weight:           bold;
@@ -591,18 +718,25 @@
 @badge-border-radius:         10px;
 
 
-// Breadcrumbs
-// -------------------------
+//== Breadcrumbs
+//
+//##
+
 @breadcrumb-padding-vertical:   8px;
 @breadcrumb-padding-horizontal: 15px;
+//** Breadcrumb background color
 @breadcrumb-bg:                 #f5f5f5;
+//** Breadcrumb text color
 @breadcrumb-color:              #ccc;
+//** Text color of current page in the breadcrumb
 @breadcrumb-active-color:       @gray-light;
+//** Textual separator for between breadcrumb elements
 @breadcrumb-separator:          "/";
 
 
-// Carousel
-// ------------------------
+//== Carousel
+//
+//##
 
 @carousel-text-shadow:                        0 1px 2px rgba(0,0,0,.6);
 
@@ -617,15 +751,19 @@
 @carousel-caption-color:                      #fff;
 
 
-// Close
-// ------------------------
+//== Close
+//
+//##
+
 @close-font-weight:           bold;
 @close-color:                 #000;
 @close-text-shadow:           0 1px 0 #fff;
 
 
-// Code
-// ------------------------
+//== Code
+//
+//##
+
 @code-color:                  #c7254e;
 @code-bg:                     #f9f2f4;
 
@@ -637,36 +775,51 @@
 @pre-border-color:            #ccc;
 @pre-scrollable-max-height:   340px;
 
-// Type
-// ------------------------
+
+//== Type
+//
+//##
+
+//** Text muted color
 @text-muted:                  @gray-light;
+//** Abbreviations and acronyms border color
 @abbr-border-color:           @gray-light;
+//** Headings small color
 @headings-small-color:        @gray-light;
+//** Blockquote small color
 @blockquote-small-color:      @gray-light;
+//** Blockquote border color
 @blockquote-border-color:     @gray-lighter;
+//** Page header border color
 @page-header-border-color:    @gray-lighter;
 
-// Miscellaneous
-// -------------------------
 
-// Hr border color
+//== Miscellaneous
+//
+//##
+
+//** Horizontal line color.
 @hr-border:                   @gray-lighter;
 
-// Horizontal forms & lists
+//** Horizontal offset for forms and lists.
 @component-offset-horizontal: 180px;
 
 
-// Container sizes
-// --------------------------------------------------
+//== Container sizes
+//
+//## Define the maximum width of `.container` for different screen sizes.
 
 // Small screen / tablet
 @container-tablet:             ((720px + @grid-gutter-width));
+//** For `@screen-sm-min` and up.
 @container-sm:                 @container-tablet;
 
 // Medium screen / desktop
 @container-desktop:            ((940px + @grid-gutter-width));
+//** For `@screen-md-min` and up.
 @container-md:                 @container-desktop;
 
 // Large screen / wide desktop
 @container-large-desktop:      ((1140px + @grid-gutter-width));
+//** For `@screen-lg-min` and up.
 @container-lg:                 @container-large-desktop;