ChangeSubnet - change the current working subnet.Synopsis:
gid ChangeSubnet -> -
Change the current subnet to the one given as argument. Create
will place newly created nodes in the current working subnet.
ChangeSubnet is not allowed for layer subnets used in the
This function can be used to change the working subnet to a new
location, similar to the UNIX command cd.
gid - The GID of the new current subnet.