Nice catch about fn and alt, Sulu. Yea, I also noticed it's right alt equivalent, ho ever, it seems term fn is a little settled here. No big deal, wrong habits are correctable

As for 4th row, it's Alt Gr + shift. Basically, it works no matter of sequence (shift + Alt Gr is ok), but sometimes, it may be tricky to bind. for example, I was not able to use lvl4 space for tab, but using lvl3 space for it and lvl4 space for @ works great.

Lately, I've noticed that when I run something via debbie, my Maemo modified layout is respected - ho ever, with LXDE it's half-screwed, half-ignored (for example, special characters invoked by lvl4 key result in that character being written upercase, no matte what - apparently, shift and lvl4 is registered simultaneously and independently from each other). It seems, that it should be re-written also for ED (via .xbindkeysrc), cloning Maemo settings (with addition of things like right click).

/Estel