Chain Lightning in "standard macro"

I need a DPS macro that also uses Chain Lightning - any suggestions for a optimal one?

This is what I use today (from these boards):

#show Lightning Bolt
/Assist focus
/castsequence reset=combat flame shock, lava burst, lightning bolt, lightning bolt, lightning bolt, lightning bolt, lightning bolt
/castrandom lightning bolt
/cast Elemental Mastery
/USE 14
/USE 13

you need to check out the macro section. there are a HUGE number of posts about shaman castsquences and /click macros. I switch to the /click macro setup myself and I'm fairly happy with the results.

Catamer how do you use a click macro?