Text Attributes
A Text widget can take plain or unicode strings, but you can also specify which attributes to display each part of that text by using "text markup" format. Text markup made up of lists and tuples. Tuples contain an attribute and text markup to apply it to. Lists used to concatenate text markup.
The normal text formatting rules apply and the attributes will follow the text when it is split or wrapped to the next line.
Text("a simple string with default attributes")
The string and space around will appear in the default foreground and background.
Text(('attr1', "a string in attribute attr1"))
The string will appear with foreground and backgrounds specified in the display module's palette for 'attr1', but the space around (before/after) the text will appear with the default foreground and background.
If you want the whole Text widget, including the space around the text, to appear as a single attribute you should put your widget inside an AttrMap widget.
Text(["a simple string ", ('attr1', "ending in attr1")])
The first three words have the default attribute and the last three words have attribute 'attr1'.
Text([('attr1', "start in attr1 "), ('attr2', "end in attr2")])
The first three words have attribute 'attr1' and the last three words have attribute 'attr2'.
Text(('attr1', ["nesting example ", ('attr2', "inside"), " outside"]))
When markup is nested only the innermost attribute applies. Here "inside" has attribute 'attr2' and all the rest of the text has attribute 'attr1'.
