VIM interval deletion note

fun!Szsqj()range
" Delete comment interval let i=0;jjl2d
let z=Qzss()
let k=Schs()
"z Comment string of type ,k Is the row difference of the visible interval .
norm 0;
let s:ss='norm! {}j{}ld'
" Note that all the subtractions have been reduced .
let m=Thgs(s:ss,k,len(z))
exe m
" Add... To each let
norm 
" sign out esc
endf