I think I can't be the only one asking for this? 
When I am looking up a word in the lexicon I either double click, or right click and choose the lexicon to go to. I'm missing the convenience in L3 when I could configure the keylink to behave as a hyperlink, and it will open up my lexicons with a single click.
Okay it's not a big deal to have to double click - it is at least better than the need to triple click (!) like they made it in Accord**ce for word lookups (the main reason I stayed away from it...), but in prolonged studies and hard passages with many lexicon lookups it can become tiring. Right now this is the only reason why I am still using L3 in my studies.
I wonder if it is possible to let us have single click as an option to open lexicon entries?