| Set | Contains | |:--------|:-------------| | letters | [a-z] | | numbers | [n0-n9] | | numpad | [np0-np9] | | fkeys | [f1-f12] | | arrows | aleft, aup, aright, adown | | symbols | equals, hyphen, coma, dot, gravis, backslash, sbopen, sbclose, slash, semicolon, apostrophe, npslash, npstar, npplus, nphyphen, npdot | | allnum | (numbers)+(numpad) | | printable | (letters)+(allnum)+(symbols) |