Undo reverses an editing action. Each window maintains a history of actions, so multiple Undo operations can reverse multiple editing actions. Redo reverses an Undo action. Each window maintains a history of Undo actions, so multiple Redo operations can reverse multiple Undo actions. Cut copies the selected text to the clipboard and deletes it from the window.
Copy copies the selected text to the clipboard.
Paste pastes the current clipboard contents into the window. Delete or Clear deletes the selected text. Select All highlights the entire text of the buffer. Insert Text Box inserts a box into the window. The text box may contain arbitrary text, and it is treated as a value, like a number or symbol.