When an error is found in the code, the routine should call the ERLOGR
function to "log" the error (i.e. to keep track of it). When an error
has been received by some routine, a message similar the following will
be printed:
%CDFEL-w: CTCDRV <== CTCTRK 10-Jul-93 14:39:00 run=54321/evt=12345
CTCRP1 failed.
%CDFEL-w - means that this message is a warning (error code 12).
CTCDRV - is the name of the routine that called the E_L.
CTCTRK - is the name of the subroutine which called CTCDRV.
10-Jul-93 14:39:00 - is the date and time of the logged error.
CTCRP1 failed. - is the description of the error.