Displaying environmental information for C and C++ programs

You can also use the DESCRIBE command to display a list of attributes applicable to the current run-time environment. The type of information displayed varies from language to language.

Issuing DESCRIBE ENVIRONMENT displays a list of open files and conditions being monitored by the run-time environment. For example, if you enter DESCRIBE ENVIRONMENT while debugging a C or C++ program, you might get the following output:
Currently open files
    stdout
    sysprint
The following conditions are enabled:
    SIGFPE
    SIGILL
    SIGSEGV
    SIGTERM
    SIGINT
    SIGABRT
    SIGUSR1
    SIGUSR2
    SIGABND