IDWriteLocalFontFileLoader
	Stock implementation of IDWriteFontFileLoader for local font files.
	Font file references created using CreateFontFileReference use this font file loader.
IDWriteTextAnalyzer (TextAnalyzer)
	DWRITE_TYPOGRAPHIC_FEATURES
	DWRITE_SCRIPT_ANALYSIS
	IDWriteTextAnalysisSink (TextAnalysisSink) -- client interface implemented to receive callbacks from TextAnalyzer
		DWRITE_LINE_BREAKPOINT
		DWRITE_SHAPING_GLYPH_PROPERTIES
		DWRITE_SHAPING_TEXT_PROPERTIES
	IDWriteTextAnalysisSource (TextAnalysisSource)
		The interface implemented by the text analyzer's client to provide text to
		the analyzer.
IDWriteTextRenderer (TextRenderer)
	DWRITE_GLYPH_RUN_DESCRIPTION
	DWRITE_STRIKETHROUGH
	DWRITE_UNDERLINE
DWRITE_ALPHA_MAX