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documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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     These are the RTS switches. Select one to see details
     of its effect. See ◄Introduction to switches►
 
     ┌─────────────────────────────────────────────────────────────┐
     │ If you are using an add-on product, see also                │
     │ ◄Additional switches►                                       │
     └─────────────────────────────────────────────────────────────┘
 
     ┌─────────────────────────────────────────────────────────────┐
     │◄0, 1, 2, ... 8►   Programmable switches                     │
     │◄A►                Choose ANSI file handling and status codes│
     │◄A1►               Display trailing spaces                   │
     │◄B, B1►            Skip locked records                       │
     │◄B2►               Choose the sorting algorithm              │
     │◄C►                Allow screens longer than 25 lines        │
     │◄C1►               Non-standard size screens                 │
     │◄C2►               Disable COBOL text window                 │
     │◄D►                Invoke the ANSI COBOL Debug module        │
     │◄E►                Execute code containing S-level errors    │
     │◄F►                Validate numeric data in intermediate code│
     │◄/F►               Change file open limit on OS/2            │
     │◄G►                Reduce the size of I/O buffers            │
     │◄/H►               Set maximum heap space on OS/2            │
     │◄K1►               Use old IBM PC keyboard handling          │
     │◄I1►               Change program search order               │
     │◄K2►               Use extended IBM PC keyboard handling     │
     │◄L►                Make I/O errors return to program         │
     │◄L1►               Enable the exception pop-up on OS/2       │
     │◄L5►               Handle LEVEL II COBOL files               │
     │◄M►                Free up memory on DOS                     │
     │◄/M►               Change default number of heaps on OS/2    │
     │◄N►                Insert nulls in line sequential files     │
     │◄O►                Disable divide by zero error              │
     │◄P►                Use high-level printer I/O                │
     │◄P1►               Sounds system bell using the BIOS         │
     │◄/P►               Specify address of port for security key  │
     │◄R►                Re-try locked record till available       │
     │◄/S►               Change default stack size                 │
     │◄S5►               Use ANSI.SYS-compatible console I/O       │
     │◄S6►               Change DISPLAY UPON CRT attribute behavior│
     │◄T►                Insert tabs in line sequential files      │
     └─────────────────────────────────────────────────────────────┘
                                    -♦-