Enables the Command Level Restart feature.
Command Level Restart feature disabled.
On UNIX or on Windows, the JBC_TCLRESTART environment variable should be set before any jBASE program is invoked. The environment variable should contain the command string to execute when the user would otherwise go to a shell prompt.
To later enable the feature, use the BITSET(-2). To later disable the feature, use the BITRESET(-2).