I have the following command:
_progres.exe -b -s 128 -p test.p -db testDB.db
I would like to know how the -s command is being used, and where I can find any other documentation on all of the command line parameters for _progres.exe.
Go to this link for the complete OpenEdge 11.6 documentation. From there, you should be able to find "Startup Command and Parameter Reference" (linked here directly)
From there:
Use Stack Size (-s) to change the size of the stack (an internal memory area used by ABL program modules)
Alternatively this KB article happens to discuss the parameter.