### 3.4.2 The Edit menu

The Edit menu contains commands that are used to execute and undo parts of the current session. This menu contains the following entries:

- Execute worksheet (Ctrl-F9)
  This will recalculate each level in the session.
- Execute worksheet with pauses
  This will recalculate each level in the session, pausing between calculations.
- Execute below
  This will recalculate the current level and each level below it.
- Remove answers below
  This will remove the answers to the current level and the levels below it.
- Undo (Ctrl+Z)
  This will undo the latest edit done to the levels, including the deletion of levels. It can be repeated to undo more than one edit.
- Redo (Ctrl+Y)
  This will redo the undone editing.
- Paste
  This will paste the contents of the system clipboard to the cursor position.
- Del selected levels
  This will delete any entry levels that you have selected.
- selection -> LaTeX (Ctrl+T)
  If you select a level, part of a level, or answer with the mouse (click and drag), this menu item will put a LATEX version of the selection on the system clipboard.
- New entry (Alt+N)
  This will insert a new entry level above the current one.
- New parameter (Ctrl+P)
  This will bring up a window in which you can enter a name and conditions for a new parameter.
- Insert newline. This will insert a newline below the cursor. Note that simply typing return will cause the current entry to be evaluated rather than inserting a newline.
- Merge selected levels. This will merge the selected levels into a single level.