!set exolist  =!char 1 to -2 of parts1,parts2,chvar1,chvar2,rat2,rat1,tgctg,trig1,
!set titlelist=!char 1 to -2 of By parts level 1,By parts level 2,Changevar level 1,Changevar level 2,Rational level 2,Rationnal level 1,tg and ctg,Trigonometric level 1,
!set exototal =!itemcnt $exolist

