// force_book.cinherit ITEM;void create(){	set_name("內功心法", ({ "neibook" }));	set_weight(600);	if( clonep() )		set_default_object(__FILE__);	else {		set("unit", "本");		set("long",			"這本舊書的紙張都已經泛黃了，上面只有一些字跡模糊的字句，似乎\n"			"提到一些呼吸方法什麼的。\n");		set("value", 3000);		set("material", "paper");		set("skill", ([			"name": 		"force",		// name of the skill			"exp_required":	0,				// minimum combat experience required											// to learn this skill.			"sen_cost":		30,				// gin cost every time study this			"difficulty":	20,				// the base int to learn this skill											// modify is gin_cost's (difficulty - int)*5%			"max_skill":	50				// the maximum level you can learn											// from this object.		]) );	}}