Help System (web edition)

A control line (with a '-' in the control column) in the print list
or in an include file (driver) and having the form
  - control <control_character>: [code]
where [code] is defined earlier, causes [code] be printed always when a
line having <control_character> in the control column of the edit field
is encountered. After [code] the line itself will be printed.

For example,
 - control W: --------------------------------------------------[CR]
overwrites the 50 first characters of the current line with '-'s.

  P = More information on PRINT