This command combines two text entities by appending the second
text to the first. The Words join method puts a space between each
text. The Letter join method appends without a space.
Select first text line: pick a text entity
Select text to add to first text line: pick a text entity
Join type as [Words/<Letters>]: press Enter
Pulldown Menu Location: Edit > Text
Keyboard Command: txtjoin
Prerequisite: Text entities