Updated version

docs/features.dot

@@ -1,6 +1,6 @@
 digraph {
   graph [outputorder=edgefirst];
-	node [shape="record", fontname="Courier-Bold", fontsize=15];
+	node [shape="record", fontname="Noto Sans Mono SemiBold", fontsize=15];
 	edge [fontname="Verdana", fontsize=12,labeldistance=7.5 ];
 	fontname="Verdana";
   ranksep=0.02; nodesep=0.5;
@@ -10,7 +10,7 @@ subgraph {
 	preprocessing[style=filled,fillcolor="lightgreen",fontname="Verdana",label="Glyph pre-processing"];
 	orthographic[style=filled,fillcolor="lightblue",fontname="Verdana",label="Orthographic Unit Shaping"];
 	reordering[style=filled, fillcolor="lightcoral",fontname="Verdana",label="Reordering group (USE)"];
-	topographic[style=filled,fillcolor="lightgoldenrod",fontname="Verdana",label="Topographical Features"];
+	topographic[style=filled,fillcolor="lightgoldenrod",fontname="Verdana",label="Topographical Features‡"];
 	typographic[style=filled,fillcolor="lightpink",fontname="Verdana",label="Typographic Presentation"];
 	positioning[style=filled,fillcolor="lightsalmon",fontname="Verdana",label="Positioning"];
 	preprocessing->reordering->orthographic->topographic->typographic->positioning;
@@ -20,8 +20,21 @@ subgraph {
 	rvrn->decision1;
 
 	ltrfeatures [label="{ltra|ltrm}", fillcolor="lightgreen",style="filled"];
-	rtlfeatures [label="{rtla|rtlm}", fillcolor="lightgreen",style="filled"];
-	fracfeatures [label="frac|numr|dnom", fillcolor="lightpink",style="filled"];
+	{
+	rtlfeatures [label="{rtla|rtlm¹}", fillcolor="lightgreen",style="filled"];
+	}
+	{
+		rank=same;
+		fracfeatures [label="frac²|numr³|dnom⁴", fillcolor="lightpink",style="filled"];
+		fracnotes [fontname="Verdana",shape=plaintext,label=<<table border="0" cellborder="0" cellspacing="0">
+			<tr><td align="left">¹ rtlm is scoped to characters with a Unicode mirroring property</td></tr>
+			<tr><td align="left">² frac is scoped to numr + the slash + dnom</td></tr>
+			<tr><td align="left">³ numr is scoped to all decimal numbers before a U+2044 FRACTION SLASH.</td></tr>
+			<tr><td align="left">⁴ dnom is scoped to all decimal numbers after a U+2044 FRACTION SLASH.</td></tr>
+	</table>
+		>];
+
+	}
 	rand [fillcolor="lightpink",style="filled"];
 
 	decision1 -> ltrfeatures [label="Left-to-right"];
@@ -35,7 +48,7 @@ subgraph {
 
 	decision2 [shape="diamond", label="Script?",fontname="Verdana"];
 
-{rank=same; HARF; notes;}
+{rank=same; HARF [label="{Harf|HARF}"]; notes;}
 	rand -> trak -> HARF -> decision2;
 
 	commonfeatures [shape=none,label=<<table border="0" cellspacing="0">
@@ -50,7 +63,10 @@ subgraph {
                     </tr>
                 </table>>
     ];
+
 	decision3 [shape="diamond", label="Script\ndirection?",fontname="Verdana"];
+
+	BUZZ  [label="{Buzz|BUZZ}"];
 	BUZZ -> commonfeatures -> decision3;
 
 	horizontalfeatures [
@@ -82,7 +98,7 @@ subgraph complexshapers {
 	subgraph cluster_arabic {
 		bgcolor="lightyellow"
 		label="Arabic, Syriac";
-	stch [ style="filled", fillcolor="lightgreen",label="ccmp|locl"];
+	stch [ style="filled", fillcolor="lightgreen",label="stch"];
 	ccmplocl [ style="filled", label="ccmp|locl", fillcolor="lightgreen"];
 	arabicfeatures [label="isol|fina|fin2|fin3|medi|med2|init", style="filled", fillcolor="lightgoldenrod"];
 	arabicfeatures2 [label="rclt|calt", style="filled",fillcolor="lightpink"];
@@ -95,7 +111,7 @@ mset [fillcolor="lightpink",style="filled"]
 	subgraph cluster_hangul {
 		bgcolor="lightyellow"
 		label="Hangul";
-		hangulfeatures [label="ljmo|vjmo|tjmo", style="filled",fillcolor="lightblue"]
+		hangulfeatures [label="ljmo|vjmo|tjmo", style="filled",fillcolor="lightgoldenrod"]
 	}
 	  hangulfeatures->BUZZ:n;
 
@@ -103,25 +119,47 @@ mset [fillcolor="lightpink",style="filled"]
 		label="Indic";
 		bgcolor="lightyellow"
 		// Preprocessing
-		loclccmpindic [label="locl|ccmp",style=filled,fillcolor="lightgreen"];
+		loclccmpindic [label="locl†|ccmp†",style=filled,fillcolor="lightgreen"];
 		node[style=filled,fillcolor="lightgreen"];
+		nukt [label="nukt†"];
+		akhn [label="akhn†"];
 		loclccmpindic->indic_reorder_1->nukt->akhn;
 		indic_reorder_1[label="Initial reordering", fontname="Verdana",fillcolor="lightgrey",shape=ellipse,style=filled]
 
 		// Orthographic
 		node[style=filled,fillcolor="lightblue"]
+		rphf [label="rphf⁵"];
+		rkpf [label="rkpf†"];
+		pref [label="pref⁶"];
+		blwf [label="blwf⁷"];
+		abvf [label="abvf⁸"];
+		half [label="half⁹"];
+		pstf [label="pstf⁸"];
+		vatu [label="vatu†"];
+		cjct [label="cjct†"];
 		akhn ->rphf -> rkpf -> pref -> blwf -> abvf -> half -> pstf -> vatu -> cjct;
 		// Typographic presentation
 		indic_typographic[style=filled,fillcolor="lightpink",label="init|pres|abvs|blws|psts|haln"]
 		indic_reorder_2[label="Final reordering",fillcolor="lightgrey",fontname="Verdana", shape=ellipse,style=filled]
 		cjct->indic_reorder_2->indic_typographic;
+
+	notes2 [fontname="Verdana",shape=plaintext,style="",label=<<table border="0" cellborder="0" cellspacing="0">
+<tr><td align="right">⁵ rphf is scoped to pre-base ra+halant sequences</td></tr>
+<tr><td align="right">⁶ pref is scoped to the two glyphs after the base; outputs are reordered</td></tr>
+<tr><td align="right">⁷ blwf is usually scoped to the whole syllable, except in Telugu and Kannada where it is post-base</td></tr>
+<tr><td align="right">⁸ abvf and pstf are scoped to post-base</td></tr>
+<tr><td align="right">⁹ half is scoped to pre-base</td></tr>
+</table>
+>];
+		indic_typographic -> notes2 [style=invis];
 	}
 
+
 	subgraph cluster_khmer {
 		label="Khmer";
 		bgcolor="lightyellow"
 
-		khmerbasic [style=filled,fillcolor="lightgreen",label="locl|ccmp|pref|bwlf|abvf|pstf|cfar"]
+		khmerbasic [style=filled,fillcolor="lightgreen",label="locl†|ccmp†|pref†|bwlf†|abvf†|pstf†|cfar†"]
 		khmerother [style=filled,fillcolor="lightpink",label="pres|abvs|blws|psts"]
 		khmerbasic -> khmerother -> khmerclig;
 				khmerclig [label="clig",style=filled,fillcolor="lightpink"];
@@ -130,11 +168,11 @@ mset [fillcolor="lightpink",style="filled"]
 	subgraph cluster_myanmar {
 		label="Myanmar";
 		bgcolor="lightyellow"
-		loclccmpmyanmar [label="locl|ccmp",style=filled,fillcolor="lightgreen"];
-		rphfmymr [label="rphf",style=filled,fillcolor="lightblue"]
-		prefmymr [label="pref",style=filled,fillcolor="lightblue"]
-		blwfmymr [label="blwf",style=filled,fillcolor="lightblue"]
-		pstfmymr [label="pstf",style=filled,fillcolor="lightblue"]
+		loclccmpmyanmar [label="locl†|ccmp†",style=filled,fillcolor="lightgreen"];
+		rphfmymr [label="rphf†",style=filled,fillcolor="lightblue"]
+		prefmymr [label="pref†",style=filled,fillcolor="lightblue"]
+		blwfmymr [label="blwf†",style=filled,fillcolor="lightblue"]
+		pstfmymr [label="pstf†",style=filled,fillcolor="lightblue"]
 		myanmarother [label="pres|abvs|blws|psts",style=filled,fillcolor="lightpink"];
 		reorder_myanmar[label="Reordering", shape=ellipse,style=filled,fontname="Verdana"]
 		loclccmpmyanmar -> reorder_myanmar-> rphfmymr -> prefmymr -> blwfmymr -> pstfmymr -> myanmarother;
@@ -143,16 +181,22 @@ mset [fillcolor="lightpink",style="filled"]
 	subgraph cluster_use {
 		label="Universal Shaping Engine"
 		bgcolor="lightyellow"
-		use_preprocessing [style=filled, label="locl|ccmp|nukt|akhn", fillcolor="lightgreen"];
+		use_preprocessing [style=filled, label="locl†|ccmp†|nukt†|akhn†", fillcolor="lightgreen"];
 		// Reoredering
-		rphfuse [label="rphf", style=filled, fillcolor="lightcoral"];
-		prefuse [label="pref", style=filled, fillcolor="lightcoral"];
+		rphfuse [label="rphf¹⁰", style=filled, fillcolor="lightcoral"];
+		prefuse [label="pref¹¹", style=filled, fillcolor="lightcoral"];
 		// Orthographic
-		orthographicuse [label="rkrf|abvf|blwf|half|pstf|vatu|cjct", style="filled", fillcolor="lightblue"];
+		orthographicuse [label="rkrf†|abvf†|blwf†|half†|pstf†|vatu†|cjct†", style="filled", fillcolor="lightblue"];
 		topographicaluse [label="isol|init|medi|fina", style="filled", fillcolor="lightgoldenrod"];
 		typographicaluse [label="abvs|blws|haln|pres|psts", style="filled", fillcolor="lightpink"];
 		reorder_use[label="Reordering", shape=ellipse,style=filled,fontname="Verdana"]
 		use_preprocessing -> rphfuse -> prefuse->orthographicuse ->reorder_use -> topographicaluse -> typographicaluse;
+			notes3 [fontname="Verdana",shape=plaintext,label=<<table border="0" cellborder="0" cellspacing="0">
+		<tr><td align="left">¹⁰ Outputs are reordered as category R</td></tr>
+		<tr><td align="left">¹¹ Outputs are reordered to before base</td></tr>
+		</table>
+		>];
+		typographicaluse -> notes3 [style=invis];
 	}
 
 }
@@ -170,7 +214,6 @@ mset [fillcolor="lightpink",style="filled"]
 	decision2->use_preprocessing;
 	decision2->BUZZ [label="  Hebrew, Thai,\n  Lao, other"];
 
-
 notes [fontname="Verdana",shape=box,label=<<table border="0" cellborder="0" cellspacing="0">
 	<tr><td align="left">
 <b>Indic</b> scripts are: Bengali, Devanagari,
@@ -205,4 +248,12 @@ Takri, Tibetan, Tifinagh, Tirhuta, Wancho, Zanabazar square,
 </td></tr>
 
 </table>>]
+
+
+	footnote[fontname="Verdana",label=<<table border="0" cellborder="0" cellspacing="0">
+		<tr><td align="left">† Feature is scoped to each syllable</td></tr>
+		<tr><td align="left">‡ All topographic features are scoped based on topographic position</td></tr>
+		</table>>];
+	notes3->footnote[style=invis];
+
 }