# Converts list to string
fun -string !ltos -list &inlist
    getlistsize *inlist &listlen
    set &idx 0
    set &ans ""
    add $ans '[' &ans
    @stdoutloop
        getlistat *inlist $idx &store
        add $ans $store &ans
        add $idx 1 &idx
        equal $idx $listlen &store
        if $store %trueend
        add $ans ", " &ans
        jump %stdoutloop

    @trueend
    add $ans "]" &ans
    return $ans
endfun

setlist *store 4 2 "Hello"
pusharg *store
call !ltos &store
stdlnout $store