diff --git a/index.html b/index.html
index fbb792b..3694017 100755
--- a/index.html
+++ b/index.html
@@ -244,12 +244,14 @@ <h6>operators</h6>
 a - b -- sub
 a * b -- mul
 a / b -- div
+a \ b -- integer div
 a % b -- mod
 a ^ b -- pow
 a += b -- sum to
 a -= b -- sub to
 a *= b -- mul to
 a /= b -- div to
+a \= b -- integer div to
 a %= b -- mod to
 a ^= b -- pow to
 a == b -- compare equals
@@ -498,6 +500,9 @@ <h6>metatables :: mathematic operators</h6>
 -- division; returned by 'a / b'
 function mt.__div(a, b) return a / b end
 
+-- integer division; returned by 'a \ b'
+function mt.__idiv(a, b) return a \ b end
+
 -- modulo; returned by 'a % b'
 function mt.__mod(a, b) return a % b end