Help System (web edition)

The tutstack can also be initiated and updated in touch mode by
touching words and lines in the edit field as follows:

  W (in touch mode) activates the word touched by the cursor.
  E (in touch mode) activates the line from the current position to right.
  B (in touch mode) activates the current character.
  ! (in touch mode) initiates the tutstack with the word activated
                    by W,E,B or with the current arithmetic result.
  ; (in touch mode) adds similarly one word at the end of the tutstack.

  C = More information on sucro codes