Function OpenPen

library/LuaApi.cpp:953–963

};

static void OpenPen(lua_State *state)
{
    luaL_getsubtable(state, lua_gettop(state), "pen");

    lua_dup(state);
    lua_rawsetp(state, LUA_REGISTRYINDEX, &DFHACK_PEN_TOKEN);

    luaL_setfuncs(state, dfhack_pen_funcs, 0);

    lua_pop(state, 1);
}

/******************
* PenArray object *