//From code.ys.def:
OMDef( "I", "nums1", "i" );
OMDef( "CachedConstant",        "yacas", "CachedConstant"        );
OMDef( "AssignCachedConstants", "yacas", "AssignCachedConstants" );
OMDef( "ClearCachedConstants",  "yacas", "ClearCachedConstants"  );
OMDef( "Pi", "nums1", "pi" );
