I am talking about built in macros that are called to do parts of the computation that the procedure does not do. If you right click on a node in your flow and choose "Export path to sas code" you can save the code that is run when your flow runs. If you look at that code you will see the names of these macros. Also, if you add
options mprint;
when you run the path, you will see a printout of many of the macros executing. The actual source of these macros is not visible otherwise.
Russ
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