In certain cases you'll want to ensure that a certain compilation unit's initialization is run before another's. ILU contains a number of trace statements that allow you to observe the progress of certain operations within the ILU kernel. The islscan program is supplied as part of the ILU release. It can therefor be used to check the syntax of an interface before running any language stubbers. If you're having a serious problem finding a bug in your ISL file, this might help.
Bug reports are more helpful with some information about the activity.
Often the our first reply to a bug report is a request for a typescript that shows the bug occurring, with all trace debugging turned on. If that doesn't make it clear to us, our second reply may be a request for a stack trace, with printouts of relevant variables and data strutures. Including these things in your bug report may speed the cycle of interactions. The value XXX is an unsigned integer as discussed in section 3. The debugger dbx should also work.