CATREAD
NM and CM callable.
Provides access to messages in an application message facility formatted
by the GENCAT utility. The CATOPEN intrinsic opens the message catalog.
I16 I32V I16V I16V U16A
msglength:=CATREAD(catindex,setnum,msgnum,catstatus,
CA I16V CA CA CA CA CA I16V
buffer,buffersize,parm1,parm2,parm3,parm4,parm5,msgdest);