My instances hold the state associated with scanning text. My subclasses scan characters for specified purposes, such as computing a CharacterBlock or placing characters into Forms.

	initialize
	initialize wantsColumnBreaks:

	private
	addEmphasis: addKern: initializeFromParagraph:clippedBy: setActualFont: setFont setFont: text:textStyle: textColor:

	scanning
	characterNotInFont columnBreak handleIndentation indentationLevel indentationLevel: leadingTab placeEmbeddedObject: plainTab primScanCharactersFrom:to:in:rightX:stopConditions:kern: scanCharactersFrom:to:in:rightX:stopConditions:kern:

	instance creation
	new

	as yet unclassified	top
	setYFor:

	initialize	top
	initialize
	wantsColumnBreaks:

	private	top
	addEmphasis: Set the bold-ital-under-strike emphasis.
	addKern: Set the current kern amount.
	initializeFromParagraph:clippedBy:
	setActualFont: Set the basal font to an isolated font reference.
	setFont Set the font and other emphasis.
	setFont: Set the font by number from the textStyle.
	text:textStyle:
	textColor: Overridden in DisplayScanner

	scanning	top
	characterNotInFont Note: All fonts should have some sort of a character to glyph mapping. If a character is not in the font it should be mapped to the appropriate glyph (that is the glyph describing a non-existing character). If done correctly, this method should never be called. It is mainly provided for backward compatibility (and I'd really like to get rid of it - ar). All fonts have an illegal character to be used when a character is not within the font's legal range. When characters out of ranged are encountered in scanning text, then this special character indicates the appropriate behavior. The character is usually treated as a unary message understood by a subclass of CharacterScanner.
	columnBreak
	handleIndentation
	indentationLevel return the number of tabs that are currently being placed at the beginning of each line
	indentationLevel: set the number of tabs to put at the beginning of each line
	leadingTab return true if only tabs lie to the left
	placeEmbeddedObject: Place the anchoredMorph or return false if it cannot be placed. In any event, advance destX by its width.
	plainTab This is the basic method of adjusting destX for a tab.
	primScanCharactersFrom:to:in:rightX:stopConditions:kern: Primitive. This is the inner loop of text display--but see scanCharactersFrom: to:rightX: which would get the string, stopConditions and displaying from the instance. March through source String from startIndex to stopIndex. If any character is flagged with a non-nil entry in stops, then return the corresponding value. Determine width of each character from xTable, indexed by map. If dextX would exceed rightX, then return stops at: 258. Advance destX by the width of the character. If stopIndex has been reached, then return stops at: 257. Optional. See Object documentation whatIsAPrimitive.
	scanCharactersFrom:to:in:rightX:stopConditions:kern: Primitive. This is the inner loop of text display--but see scanCharactersFrom: to:rightX: which would get the string, stopConditions and displaying from the instance. March through source String from startIndex to stopIndex. If any character is flagged with a non-nil entry in stops, then return the corresponding value. Determine width of each character from xTable, indexed by map. If dextX would exceed rightX, then return stops at: 258. Advance destX by the width of the character. If stopIndex has been reached, then return stops at: 257. Optional. See Object documentation whatIsAPrimitive.

	class initialization	top
	initialize CharacterScanner initialize

	instance creation	top
	new Answer a new instance of the receiver (which is a class) with no indexable variables. Fail if the class is indexable.