Undoes the last action in the editor.
The Undo menu is only available when there is an action to Undo.
Cuts the currently selected text and moves it to the clipboard.
The Cut menu is only available when text is selected.
Copies the currently selected text onto the clipboard.
The Copy menu is only available when text is selected.
Pastes the text from the clipboard to the current cursor position.
If there is text selected, then that text will be replaced with the text on the clipboard.
The Paste menu is only available when there is text on the clipboard.
Deletes the selected text.
The Delete menu is only available when text is selected.
Selects all of the text in the current text document.