$Date: 2005/10/24 07:03:36 $
$Revision: 1.1 $
-- Create group list.
-- Create group list.
-- Number of groups in list
-- Extend groups with a_number of channels.
-- New channels are put as last elements.
-- Put a_group into list at position an_index.
-- Remove a_number of groups from group_list.
Implements a countainer to hold channel groups.
Use this class to store channel groups.
Note: You should not use this class as grouping is
available through {EM_CHANNELS}. {EM_CHANNELS}
will do all the dirty work for you.