Yep, this one's definitely for me. :-)
That's the extra ISO key (VK_102, <LSGT>, ...). I'm guessing you use my PKL files, in which I've set that to the OE ligature symbol. Most modern users don't require it, but if you want a fancier English you may use both Œ, Æ, the diaeresis accent and more! At the risk of seeming archæic, I guess. ;-) It's used in French, too.
For locale layouts, the extra key is very useful indeed! I use it for the Norwegian letter Ø (which incidentally, is very similar to Œ!), for instance.
Its <LSGT> name stems from the fact that many layouts has mapped it to the less/greater than symbols, but using a US-type layout these are better placed above dot/comma. Other layouts have an extra minus/underscore key there, which is unnecessary.
That key could be used for anything you type that's a bit rare but still occurs now and then. It's up to you to decide what that might be! No wrong answers I think.
At some point in the future of PKL, it'll support ligatures/hotstrings, so then you could put the hotstring dead key there! :-) Actually, you may consider whether any of the existing dead keys (maths, greek, currency...) would be useful to you in a more accessible position?
Last edited by DreymaR (20-Feb-2017 11:35:03)