Shift click a button to insert its upper-case form. To splitjoin with the previous execution group place the cursor at the start of the Maple input. On the same General tab on the Properties window you will see a Shortcut key field.
To splitjoin with the previous execution group place the cursor at the start of the Maple input.
Everything you type in this environment is considered math. I want instead underline. Shift click a button to insert its upper-case form. For a list of math editing shortcut keys see 2-D Math Shortcut Keys and Hints.