do they exist? i find no doc strings inside the module.
print dir (PhysicsConstraints)
and then for each function print <module>.<funct>.doc
for example:
print PhysicsConstraints.setDeactivationTime.doc
thanks, i have a script that dumps all doc strings to a file, but it had a bug. all is working now. 
That’s cool !
Can you share that script with us?