Basic pre-set variables in Petri Net Effect Execution
Allow the code in "Effect" of a Transition to have some values from the model pre-set, similar to the Flowchart.
From Flowcharts:
Special variables are available in each object which can be used in the code:
* this_modelid - contains the ID of the Flowchart model.
* this_objid - contains the ID of the object that is current being processed/executed.
* str_fc_stdout - contains everything written using PRINT or PRINTLN
* str_fc_debout - contains everything written to the debug output, even if the debug window is not shown.