Within the user routines, depending on the application, it may be necessary to know if a compilation of either the test file, histogram file or constant file has been done. This detection can be used to execute specific code extracting the corresponding index of the variable names or particular computation, e.g: eventIX, calibIX, testIX, get_hist. For that purpose, SusiQ provides a series of system flag that the user may toggle or acknowledge at any time. These flags are defined in the susictl.inc include file which must be present in the corresponding user routine.