touch on (
http://definr.com/touch on)
v 1: refer to or discuss briefly
2: be about; have to do with; be relevant to; refer, pertain,
or relate to; "What's this novel all about?"; "There were
lots of questions referring to her talk" [syn:
refer,
pertain,
relate,
concern,
come to,
bear on,
touch]
3: restore by replacing a part or putting together what is
torn or broken; "She repaired her TV set"; "Repair my
shoes please" [syn:
repair,
mend,
fix,
bushel,
doctor,
furbish up,
restore] [ant:
break]
4: have an effect upon; "Will the new rules affect me?" [syn:
affect,
impact,
bear upon,
bear on,
touch]