I use the command "setxkbmap it &" to set at startup the italian keyboard layout.
I want to change some keys and so I modified this file /usr/local/share/X11/xkb/symbols/it :
...
name[Group1]= "Italy - Georgian";
key <TLDE> { [ backslash, bar, notsign, brokenbar ] };
key <AE01> { [ 1, exclam, oneinferior, onesuperior ] };
key <AE02> { [ 2, quotedbl, twoinferior, twosuperior] };
key <AE03> { [ 3, sterling, threeinferior, threesuperior ] };
key <AE04> { [ 4, dollar, fourinferior, foursuperior ] };
key <AE05> { [ 5, percent, fiveinferior, fivesuperior ] };
key <AE06> { [ 6, ampersand, sixinferior, sixsuperior ] };
key <AE07> { [ 7, slash, seveninferior, sevensuperior ] };
key <AE08> { [ 8, parenleft, eightinferior, eightsuperior ] };
key <AE09> { [ 9, parenright, nineinferior, ninesuperior ] };
key <AE10> { [ 0, equal, zeroinferior, zerosuperior ] };
key <AE11> { [apostrophe, question, grave, questiondown ] };
key <AE12> { [ igrave, asciicircum, asciitilde, dead_circumflex ] };
However, I do not get any results, even restarting xorg, you have any idea?