Alt+Z is the default shortcut for Edit | Insert Date+Time, which *inserts* the date/time. In the DE pane, this inserts a new item and titles it with the date/time. In a form field, item attributes pane, or details of a text item, it inserts the date/time into the focused field.
Item | Rename To | Date+Time/Date/Time is for renaming an *existing* item with the current date/time. You can connect these commands to keyboard shortcuts if desired (Tools | Customize | Keyboard).
|