qb45qck.hlp (Table of Contents; Topic list)
SHELL Statement QuickSCREEN
  QuickSCREEN      Details      Example      Contents      Index
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SHELL - a statement that interfaces with DOS to exit the BASIC program,
        run a .COM, .EXE, or .BAT program, or a DOS command, and return
        to the program at the line following the SHELL statement
 
Syntax
  SHELL [commandstring]
    ■ If all arguments are omitted, DOS will give you a new COMMAND.COM
      shell and DOS commands can be entered at the DOS prompt
    ■ commandstring is a string expression that contains the name of a
      program to run and any program options