marked _Tool_ the tools in code (#if 0 for release)
ter gen code no switch (uses same time)
editor keys rearrange (regional keyboards issue)
-,= now also with 9,0 (moved left into letters)
[,] with O,P
;' with K,L
,. with N,M
ctrl-0 set 1st check
also upd help page, other small tweaks