Teledyne LeCroy IBTrainer - IBTrainer Users Manual - Manual (Page 64)

Using Auxiliary Features Extending the IBTrainer Software with Your Own TCL Scripts
64
CATC IBTrainer InfiniBand Exerciser, August 2002
A variable named _local will be set to 1 by the software to
indicate the loading of the extension. A script can thus check whether it
is called from the software or stand-alone.
An example for this can be filter.tcl in the directory
/lib/tcl . It provides the procedure filter_iginit.