It its now possible to check parameters for Madagascar programs in SCons flows using CHECKPAR option like this: scons CHECKPAR=y <target> Here is what happened when I first ran an example from rsftour:

bash$scons CHECKPAR=y scons: Reading SConscript files ... No parameter "n2" in sfwindow Failed on "window n2=10 min1=0.4 max1=0.8"  After fixing self-documentation for sfwindow: bash$ scons CHECKPAR=y