/usr/share/xmltv/tv_grab_uk_rt/channel_ids

This file maps Radio Times channel ids to XMLTV style.
Should list all the channels on the RT site?
This file is the basis for everything?
Where do you get this from?
xmlid = web style address
	RT channel reference
		Decription

Example rows:
south.bbc1.bbc.co.uk:102:BBC ONE South
south-west.bbc1.bbc.co.uk:103:BBC ONE South West
wales.bbc1.bbc.co.uk:100:BBC ONE Wales
west.bbc1.bbc.co.uk:104:BBC ONE West
east.bbc2.bbc.co.uk:106:BBC TWO East



/home/mythtv/.mythtv/{input source}.xmltv

List the channels that you actaully want to grab to the db
channel xmlid from the above /usr/share/xmltv/tv_grab_uk_rt/channel_ids

channel north-west.bbc1.bbc.co.uk
channel channel4.com
channel channel5.co.uk
channel itv2.itv.co.uk
channel itv3.itv.co.uk
channel e4.channel4.com
channel plus-1.e4.channel4.com


<http://xmltv.radiotimes.com/xmltv/channels.dat>

The data file from the RT site.  Lists the RT id, and the name.

Example rows:
34|Grampian
35|ITV1 Wales
36|ITV1 West
37|Scottish
38|Ulster
39|Animal Planet
40|Artsworld
43|B4U Movies 


So, I'm guessing the grabber gets the RT site channels.dat file,and compares it to the tv_grab_uk_rt/channels.id file to make sure it knows what you're talking about, and then grabs the channels that are in the /home/ channels_id file and puts those listings in the db?  So channels not in the /home/ channels_id get ingonred, and no data comes down from the RT site?

Questions:  Where dos the db get it's descriptions from for channels?
Where do the channel numbers come from?  The initial channel scan, if I remember right?
And in the db, there is a table linking the channel no, to the rt name like itv2.itv.co.uk so the listings get connected to the right channel?