这个脚本干啥用的，高手帮忙看下

//Semi, Burst or Normal//
alias +sattack "normalfire"
alias -sattack "wait; sattackoff; adjust_crosshair"

alias sattackoff "-attack"
alias +sattack2 "+attack2"
alias -sattack2 "-attack2"

alias smsg1 "d1; echo Normal-Mode; d0"
alias smsg2 "d1; echo Semi-Mode; d0"
alias smsg4a "d1; echo Sniper-Mode RUN LEFT; d0"
alias smsg4b "d1; echo Sniper-Mode RUN RIGHT; d0"

alias semifire "+attack; wait; -attack"
alias normalfire "+attack; adjust_crosshair; alias +sattack2 +attack2"
alias snipefireleft "+attack; wait; +moveleft -attack; wait; +moveleft; go_slot2; +moveleft; wait5; -moveleft"
alias snipefireright "+attack; wait; +moveleft -attack; wait; +moveright; go_slot2; +moveright wait5; -moveright"

alias getnormalfire "-sattack2; alias sselect select2; select1"