This variable allows you to turn off key compression in CISAM files. By default, the ACUCOBOL-GT interface to CISAM uses the key compression feature of CISAM. But some CISAM emulators do not understand the compressed keys and cannot read the files created. This variable allows you to turn off the compression.

When the variable is set to 0 (off, false, no), key compression is not used. When it's set to the default of 1 (on, true, yes), key compression is used. Note that this value is examined each time a file is created, so its setting can be changed for each file. The setting is meaningful only when the file is created. After that, the file retains its compression mode.