> For the complete documentation index, see [llms.txt](https://guide.cronuszen.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guide.cronuszen.com/gpcscripting/gpc-script-guide/gpc-developer-guide/combo-section.md).

# Combo Section

A combo (short for combination) is a combination of pre-programmed instructions which are executed in sequence. Just like the `main` section, commands within a combo are performed in the order they are written.

You can run any code you can run in the `main` section within a combo, uch as calling functions or setting variables, although this is generally unnecessary and usually results in nothing more than a waste of stack memory and byte code space.

A combo is ideally suited to set the output of a button for a specific length of time which is done using the `wait` command, a command that is unique to combos and cannot be used elsewhere.

Just as with variables, a combo name can start with either an underscore (`_`) or a letter and can be followed by any combination of letters, digits, or underscores.

```gpc
main {
    if(event_press(XB1_A)) {
        combo_run(mycombo);
    }
    if(event_press(XB1_B)) {
        if(combo_running(mycombo)) {
            combo_stop(mycombo);
        }
    }
    if(event_press(XB1_X)) {
        combo_restart(mycombo);
    }
}

combo mycombo {
    set_val(XB1_A, 100);
    wait(200);
    wait(4000);
    set_val(XB1_B, 100);
    wait(200);
    wait(4000);
    set_val(XB1_X, 100);
    wait(200);
    wait(4000);
    set_val(XB1_Y, 100);
    wait(200);
    wait(4000);
    set_val(XB1_LB, 100);
    wait(200);
    wait(4000);
    call(mycombo2);
}

combo mycombo2 {
    set_val(XB1_RB, 100);
    wait(100);
    wait(2000);
}
```


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