rathena/doc/sample/npc_test_func.txt

//===== rAthena Script =======================================
//= Sample: Functions
//===== By: ==================================================
//= rAthena Dev Team
//===== Last Updated: ========================================
//= 20120901
//===== Description: ========================================= 
//= Demonstrates use of functions.
//============================================================

// Define the function func001
function	script	func001	{
	mes "Hello there!";
	next;
	return;	// Return to script
}

// Define the function func002
function	script	func002	{
	return "I'm a function";
}

// Uses 3 different methods of displaying dialogue from both internal and external sources.
prontera,168,189,1	script	Functions	112,{
	callfunc "func001";		// Calls func001 and displays "Hello there!"
	mes callfunc("func002");	// Calls func002 and displays "I'm a function"
	next;
	callsub L_SUB001;		// Calls the label L_SUB001 and displays "I'm a label"
	close;
	end;

L_SUB001:
	mes "I'm a label";
	return;
}