I wished I 'd known that before - I am kicking myself now. I use a All-for-one remote but have run out of buttons a bit (hense my slight obsession with the coloured buttons) :-(
Now --- If I could get the BBC old fashioned TXT button to work that would be awsome but I am guessing that its a hardware driven thing. It's definitely there somewhere in the transmission signal as it works on both Freeview and on freesat - On my TV and on my freesat box I can press TXT and it brings up the BBC text service (you know - the one they were due to stop but have since given a reprieve) and of course having the BBC red button would be just too much to ask.
The wife can't cope with buttons not doing what they say on the label - I would tell her that 2 & 8 are for +24 etc. It would then be totally forgotten a day later. However.... I have a chance with telling her that CH+ and CH- are in fact +24 and -24 :-)