void SomeAction1()
{
    unit u = GetTriggerUnit()
    DoSmthng1(u)
    DoSmthng2(u)
    DoSmthng3(u)
    int i = 0
    whilenot(i>12)
    {
        DoSmthng4(u)
        i++
    }
    flush locals
}
// но
void SomeAction2() // быстрее
{
    DoSmthng1(GetTriggerUnit())
    DoSmthng2(GetTriggerUnit())
}
void SomeAction3() // медленнее
{
    unit u = GetTriggerUnit()
    DoSmthng1(u)
    DoSmthng2(u)
    flush locals
}

function SomeAction1 takes nothing returns nothing
    local unit u = GetTriggerUnit()
    local integer i = 0
    call DoSmthng1(u)
    call DoSmthng2(u)
    call DoSmthng3(u)
    loop
        exitwhen(i>12)
        call DoSmthng4(u)
        set i = i + 1
    endloop
    set u = null
endfunction
// но
function SomeAction2 takes nothing returns nothing // быстрее
    call DoSmthng1(GetTriggerUnit())
    call DoSmthng2(GetTriggerUnit())
endfunction

function SomeAction3 takes nothing returns nothing // медленнее
    local unit u = GetTriggerUnit()
    call DoSmthng1(u)
    call DoSmthng2(u)
    set u = null
endfunction