For some it is more convenient to use the Cut and Paste buttons on the keyboard rather than the Edit menu.
x86 and PowerPC keyboards do not have Cut, Copy, and Paste keys. Use Ctrl-Alt-x, Ctrl-Alt-c, and Ctrl-Alt-v respectively.
Clicking SELECT twice on a word highlights that word for cutting or copying.
Clicking SELECT three times on a text line highlights the whole line for cutting or copying.
Clicking SELECT four times anywhere in the file highlights the entire contents of the document.