[css-inline] Add list of properties that apply to initial letters, as rightly requested by Tantek

Author: fantasai

css-inline/Overview.bs

@@ -350,6 +350,9 @@ This property specifies styling for dropped, raised, and sunken initial letters.
   <dd>This optional second argument argument defines the number of lines the initial letter should sink. Values must be greater than zero. If omitted, it duplicates the first argument, floored to the nearest positive whole number.
 </dl>
 
+Issue: Should this be <css>initial-letters</css> (plural) as originally discussed?
+Since it can apply to multiple letters.
+
 An <dfn lt="initial letter | initial letter box">initial letter</dfn> is
 a box to which 'initial-letter' applies and is not ''initial-letter/normal'':
 this triggers the special layout considerations described below.
@@ -386,7 +389,24 @@ Issue: Define interaction with Ruby. Easiest is to make it not apply to/within r
 
 The 'initial-letter' property does not apply to boxes that are not positioned at the start of the line due to bidi reordering.
 
-<h4 id="processing-model">Layout Model</h4>
+<h4 id="initial-letter-properties">
+Properties</h4>
+
+The following properties apply to an <a>initial letter</a>:
+
+<ul>
+	<li>all font properties (see [[CSS3-FONTS]])
+	<li>the 'color' and 'opacity' properties (see [[CSS3COLOR]])
+	<li>all background properties (see [[CSS3BG]])
+	<li>any typesetting properties that apply to inline elements (see [[CSS3TEXT]])
+	<li>all text decoration properties (see [[CSS3-TEXT-DECOR]])
+	<li>all margin, border and padding properties  (see [[CSS21]] and [[CSS3BG]])
+</ul>
+
+Issue: Add 'width'/'height' as requested by Tantek... need to integrate with model.
+
+<h4 id="initial-letter-model">
+Layout Model</h4>
 
 An <a>initial letter</a> is laid out following the steps outlined below:
 
@@ -608,7 +628,7 @@ Note: 'initial-letter-wrap' is at risk.
 
 <pre class="propdef">
 Name: <dfn id="propdef-initial-letter-wrap">initial-letter-wrap</dfn>
-Value: none | first | all | auto | grid
+Value: none | first | all | grid
 Initial: none
 Applies to: <code>::first-letter</code> pseudo-elements and inline-level first child of a block container
 Inherited: yes
@@ -653,7 +673,7 @@ Issue: Do we need an unconditional ''first''?
 <dt><dfn>all</dfn></dt>
 <dd>For each line of text impacted by the initial letter, the line box adjacent to the intial letter starts at the start-most point that touches the ink of the initial letter, plus the amount of the <a>initial letter</a>’s end-side border+padding+margin.</dd>
 
-This value is at-risk.
+Note: This value is at-risk.
 
 <dt><dfn>grid</dfn>
 <dd>This value is the same as ''none'',
@@ -677,12 +697,13 @@ and 1em represents the typical character advance width for ideographic character
 Note: In this example, the exclusion area for the drop initial
 is larger than its glyph in order to preserve inline-axis alignment.
 
-This value is also at-risk.
+Note: This value is also at-risk.
+
+
 </dl>
 
 Issue: Edit figure to show how auto behaves in varying contexts
 
-
 <div class="example">
 <pre>
 p::first-letter {