This class represents a genie character.

Originally, characters were real characters (one single ascii character), but now, a character is much more general.

Basically, there are 3 different types of characters:

- Sequence of character (keystrokes) [type = #strokes]:
This category consists of any character sequence not starting with
a #. Sequences starting with a # can be entered by enclosing them inti ''.
(e.g. '#keystrokes' instead of #keystrokes)

- Command [type = #command]:
A command is basically a symbol.
Commands are used to tell the target Morph to do certain actions.
There are a lot of predefinied commands available (#inspectLastGesture, #switchCase,
#inspectDictionaries, etc.). But new commands can be added all the times.

- Code [type = #code]:
A genie character can contain any kind of Squeak code.
The format to enter a code character is the following: #Header#Code, whereas
Code is general Squeak code and Header is a descriptive string that can be omitted.
(Example: '#beep#Smalltalk beep' or just: '##Smalltalk beep').
When the gesture assigned to the code character is recognized, a MorphicGestureEvent
is sent to the target Morph. Then the entered code gets executed with the
MorphicGestureEvent as the receiver.

In each case, the contents of the character is stored in the instance variable 'string'.

	comparing
	< <= = > >= hash species

	printing
	printOn:

	testing
	isCode isCommand isStrokes

	accessing	top
	codeString Return the code string of the character
	correspondingKeystrokes Return the keystrokes corresponding to the characters.
	correspondingMouseEventsHand:position:buttons:
	correspondsToKeystrokes Does the character correspond to a sequence of keystrokes?
	correspondsToMouseEvents Does the character correspond to a mouse event
	evaluateCodeIn: Evaluate the code represented by the character with the given CRGesture as the receiver
	headerString
	headerString:
	normalized Return the normalized character. If the character typ is #strokes, this is usually just the instance variable string. However, if '' are used to escape #, return the string without ''. If the type is #code, return the whole code string including a possible header. If the type is #command, return the command as a symbol
	string
	string:
	type Type of the character: #code, #command or #strokes

	comparing	top
	<
	<=
	= Answer whether the receiver and the argument represent the same object. If = is redefined in any subclass, consider also redefining the message hash.
	>
	>=
	hash Answer a SmallInteger whose value is related to the receiver's identity. May be overridden, and should be overridden in any classes that define =
	species Answer the preferred class for reconstructing the receiver. For example, collections create new collections whenever enumeration messages such as collect: or select: are invoked. The new kind of collection is determined by the species of the original collection. Species and class are not always the same. For example, the species of Interval is Array.

	printing	top
	printOn: Append to the argument, aStream, a sequence of characters that identifies the receiver.

	testing	top
	isCode Is the character Squeak code (e.g. #beep#Smalltalk beep)
	isCommand Is the character a command (e.g. #inspectLastGesture)
	isStrokes Is the character a sequence of real characters (keystrokes) (e.g. Hello)

	instance creation	top
	string: