Meaning of "in" in CORBA

[gump]

What is the meaning of "in" in parameter lists in CORBA?
E.g.

double corba_cmdr( in double destro );

[helios]

It's documentation that means "this is an input parameter". It's probably #defined as nothing and thus ignored by the compiler. In other words, it doesn't really mean anything.

[gump]

It's actually in CORBA C++ idl.
It means an input expected from a client in to a server...

[RedX]

IN means the parameter is only for data input.

After you compile it with the idl compiler the function will be

double corba_cmdr(double destro){

whereas with inout you'd get

double corba_cmdr(double& destro){

don't pin me down wether it'd be a ref (&) or a pointer(*) but i think you get the point.