Programmer's WorkBench (pwb.hlp) (Table of Contents; Topic list)
Important Notice
The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.
PWB Error
 
     Command '<name>' invalid when no windows are present
 
     A request was made to execute the command <name>, but no windows
     are open. The command requires at least one open window to operate.
                                    -♦-