HP-UX SNAplus2 CSV Programmer's Guide

Common Service Verbs Reference
DEFINE_TRACE (HP-UX Systems Only)
Chapter 258
error occurs). This can be used to force tracing of a program which
normally turns tracing off, or to suppress tracing of a program which
normally uses it. For more information about tracing and on this
environment variable, refer to the HP-UX SNAplus2 Administration
Guide.