[css-fonts-4] Cleanup Glyph selection and positioning

Author: svgeesus

css-fonts-4/Overview.bs

@@ -3166,47 +3166,69 @@ Font Feature Properties</h2>
 <h3 id="glyph-selection-positioning">
 Glyph selection and positioning</h3>
 
-This section is non-normative
-
-Simple fonts used for displaying Latin text use a very basic
-processing model. Fonts contain a <em>character map</em> which maps each
-character to a glyph for that character.  Glyphs for subsequent
-characters are simply placed one after the other along a run of text.  Modern font
-formats such as OpenType and AAT (Apple Advanced Typography) use a
-richer processing model. The glyph for a given character can be
-chosen and positioned not just based on the codepoint of the character
-itself, but also on adjacent characters as well as the language,
-script, and features enabled for the text.  Font features may be
-required for specific scripts, or recommended as enabled by default or
-they might be stylistic features meant to be used under author
-control. The point at which font selection and positioning happens
-in the overall order of text processing operations (such as
-text transformation, text orientation and text alignment) is
-described in [[css-text-3#order]].
-
-For a good visual overview of these features, see
-the [[OPENTYPE-FONT-GUIDE]].  For a detailed description of glyph processing for
-OpenType fonts, see [[WINDOWS-GLYPH-PROC]].
-
-Stylistic font features can be classified into two broad
-categories: ones that affect the harmonization of glyph shapes with the
-surrounding context, such as kerning and ligature features, and ones
-such as the small-caps, subscript/superscript and alternate features
-that affect shape selection.
-
-The subproperties of 'font-variant!!property' listed below are used to control
-these stylistic font features. They do not control features that are
-required for displaying certain scripts, such as the OpenType features
-used when displaying Arabic or Indic language text.  They affect glyph
-selection and positioning, but do not affect font selection as
-described in the font matching section (except in cases required for
-compatibility with CSS 2.1).
-
-To assure consistent behavior across user agents, the equivalent
-OpenType property settings are listed for individual properties and
-are normative.  When using other font formats these
-should be used as a guideline to map CSS font feature property values
-to specific font features.
+	This section is non-normative
+
+	Simple fonts used for displaying Latin text
+	use a very basic processing model.
+	Fonts contain a <a>character map</a>
+	which maps each character
+	to a glyph for that character.
+	Glyphs for subsequent characters
+	are simply placed one after the other along a run of text.
+	Modern font formats
+	such as OpenType
+	and AAT (Apple Advanced Typography)
+	use a richer processing model.
+	The glyph for a given character can be
+	chosen and positioned
+	not just based on the codepoint of the character itself,
+	but also on adjacent characters
+	as well as the language,
+	script,
+	and features enabled for the text.
+	Font features may be
+	required for specific scripts,
+	or recommended as enabled by default
+	or they might be stylistic features
+	meant to be used under author control.
+	The point at which font selection and positioning happens
+	in the overall order of text processing operations
+	(such as text transformation, text orientation and text alignment)
+	is described in [[css-text-3#order]].
+
+	For a good visual overview of these features,
+	see the [[OPENTYPE-FONT-GUIDE]].
+	For a detailed description of glyph processing
+	for OpenType fonts,
+	see [[WINDOWS-GLYPH-PROC]].
+
+	Stylistic font features can be classified
+	into two broad categories:
+	ones that affect the harmonization of glyph shapes
+	with the surrounding context,
+	such as kerning and ligature features,
+	and ones such as the small-caps,
+	subscript/superscript and alternate features
+	that affect shape selection.
+
+	The subproperties of 'font-variant!!property' listed below
+	are used to control these stylistic font features.
+	They do not control features
+	that are required for displaying certain scripts,
+	such as the OpenType features used when displaying Arabic or Indic language text.
+	They affect glyph selection and positioning,
+	but do not affect font selection
+	as described in the font matching section
+	(except in cases required for compatibility with CSS 2.1).
+
+	To assure consistent behavior across user agents,
+	the equivalent OpenType property settings
+	are listed for individual properties
+	and are normative.
+	When using other font formats
+	these should be used as a guideline
+	to map CSS font feature property values
+	to specific font features.
 
 
 <h3 id="language-specific-support">