lua_getextraspace[-0, +0, –] void *lua_getextraspace (lua_State *L); Returns a pointer to a raw memory

string.byte (s [, i [, j]])s[i]s[i+1]s[j]iji

table.remove (list [, pos]) Removes from list the element at position pos, returning the value of the removed element. When pos is an integer

pairs (t) If t has a metamethod __pairs, calls it with t as argument and returns the first three results from the call. Otherwise

math.cos (x) Returns the cosine of x (assumed to be in radians).

luaL_optlstring[-0, +0, v] const char *luaL_optlstring (lua_State *L, int arg

luaL_checkinteger[-0, +0, v] lua_Integer luaL_checkinteger (lua_State *L, int arg); Checks whether

math.log (x [, base]) Returns the logarithm of x in the given base. The default for base is e (so that the function returns the natural logarithm

math.sqrt (x) Returns the square root of x. (You can also use the expression x^0.5 to compute this value.)

math.asin (x) Returns the arc sine of x (in radians).