SUMMARY In the current version of multi-source, all (C++) strings are allowed as names for a master. This causes problems, since e.g. 0x0 is allowed in some character sets. Note also that the named master names are used to build up the filenames, so this causes further restrictions on what should be allowed names. DESCRIPTION 1. Need to figure out a proper definition of names (A-Za-z0-9_?). 2. Need to limit the allowed names to this definition giving user good error message if he tries to use improper name. NOTES Note that all length(named_master) need to be changed.