* Command-Shift-A selects all text in the Message box when it's open for
editing.
* You can control the font, style, and size of text in the Message box by
setting its textFont, textSize, and textStyle properties (but you don't have
access to the Text Style dialog box). For example, to make the type in the
message box larger, type:
set the textSize of the message to 14
This article was adapted from the HyperCard 2.2 New Features stack.