Update internals

doc/diagram/architecture.dot

+digraph {
+	compound=true
+	fontname="Inconsolata, Consolas"
+	fontsize=10
+	margin="0,0"
+	ranksep=0.2
+	nodesep=0.5
+	penwidth=0.5
+	colorscheme=spectral7
+	
+	node [shape=box, fontname="Inconsolata, Consolas", fontsize=10, penwidth=0.5, style=filled, fillcolor=white]
+	edge [fontname="Inconsolata, Consolas", fontsize=10, penwidth=0.5]
+
+	subgraph cluster1 {
+		margin="10,10"
+		labeljust="left"
+		label = "SAX"
+		style=filled
+		fillcolor=6
+
+		Reader -> Writer [style=invis]
+	}
+
+	subgraph cluster2 {
+		margin="10,10"
+		labeljust="left"
+		label = "DOM"
+		style=filled
+		fillcolor=7
+
+		Value
+		Document
+	}
+
+	Handler [label="<<concept>>\nHandler"]
+
+	{
+		edge [arrowtail=onormal, dir=back]
+		Value -> Document
+		Handler -> Document
+		Handler -> Writer
+	}
+
+	{
+		edge [arrowhead=vee, style=dashed, constraint=false]
+		Reader -> Handler [label="calls"]
+		Value -> Handler [label="calls"]
+		Document -> Reader [label="uses"]
+	}
+}
\ No newline at end of file

doc/diagram/utilityclass.dot

+digraph {
+	rankdir=LR
+	compound=true
+	fontname="Inconsolata, Consolas"
+	fontsize=10
+	margin="0,0"
+	ranksep=0.3
+	nodesep=0.15
+	penwidth=0.5
+	colorscheme=spectral7
+	
+	node [shape=box, fontname="Inconsolata, Consolas", fontsize=10, penwidth=0.5, style=filled, fillcolor=white]
+	edge [fontname="Inconsolata, Consolas", fontsize=10, penwidth=0.5]
+
+	subgraph cluster0 {
+		style=filled
+		fillcolor=4
+
+		Encoding [label="<<concept>>\nEncoding"]
+
+		edge [arrowtail=onormal, dir=back]
+		Encoding -> { UTF8; UTF16; UTF32; ASCII; AutoUTF }
+		UTF16 -> { UTF16LE; UTF16BE }
+		UTF32 -> { UTF32LE; UTF32BE }
+	}
+
+	subgraph cluster1 {
+		style=filled
+		fillcolor=5
+
+		Stream [label="<<concept>>\nStream"]
+		InputByteStream [label="<<concept>>\nInputByteStream"]
+		OutputByteStream [label="<<concept>>\nOutputByteStream"]
+
+		edge [arrowtail=onormal, dir=back]
+		Stream -> { 
+			StringStream; InsituStringStream; StringBuffer; 
+			EncodedInputStream; EncodedOutputStream; 
+			AutoUTFInputStream; AutoUTFOutputStream 
+			InputByteStream; OutputByteStream
+		}
+
+		InputByteStream ->	{ MemoryStream; FlieReadStream }
+		OutputByteStream -> { MemoryBuffer; FileWriteStream } 
+	}
+
+	subgraph cluster2 {
+		style=filled
+		fillcolor=3
+
+		Allocator [label="<<concept>>\nAllocator"]
+
+		edge [arrowtail=onormal, dir=back]
+		Allocator -> { CrtAllocator; MemoryPoolAllocator }
+	}
+
+	{
+		edge [arrowtail=odiamond, arrowhead=vee, dir=both]
+		EncodedInputStream -> InputByteStream
+		EncodedOutputStream -> OutputByteStream
+		AutoUTFInputStream -> InputByteStream
+		AutoUTFOutputStream -> OutputByteStream
+		MemoryPoolAllocator -> Allocator [label="base", tailport=s]
+	}
+
+	{
+		edge [arrowhead=vee, style=dashed]
+		AutoUTFInputStream -> AutoUTF
+		AutoUTFOutputStream -> AutoUTF
+	}
+
+	//UTF32LE -> Stream [style=invis]
+}
\ No newline at end of file