Spring RTS Engine

What categories can be used in selectkeys.txt? For example Building is not a category? I tried categories found in (?on at... sorry) http://modinfo.adune.nl/ such as MOBILE, KBOT... and then manually I typed Mobile, Kbot in selectkeys.txt without success... It seems to me mobile, kbot ... are not in...

(First sorry about my poor english) I have experienced lags nowadays and thanks to the adv. player list I realised that it is because my mobile internet connection. My ping is >2s sometimes (in this case the up/down arrow is red; you can check the value numerically going over the icon with your mous...