Update spec.md

spec.md

@@ -91,20 +91,6 @@ In this document :
 - `(while <cond> [expressions])`:  
   while cond evalutates to true, will execute optional expressions 
 
-- `(for (<vec> <var>) [expressions])`
-  Will initialize a local scope variable var with the type of the vector vec,  
-  and execute expressions for every element of vec. var will be set to the  
-  element of vec interated on
-  Example:
-  ```
-  (let:vec:int a (1,2,3))
-  (for (a i)
-    (write i)
-    (write " ")
-  )
-  ```
-  will display `1 2 3 `
-
 - `(fn (<name> [arg0[:type] ... argN[:type]]) [expressions])` :  
   Declares a function of name name, optional args arg0-argN with optional  
   types (recommended to explicit them), that executes optional expressions  
@@ -232,10 +218,9 @@ if 1:2 / 1:2:3, means stitching 1,2,3 together as a 2 or 3 byte value
 - `popl` : pops the last #2 values on stack, starting from #1
 - `cst0` : 2:3 -> LSW of 3
 - `cst1` : 2:3 -> MSW of 3
-- `iter` : Iterates on vector 1, keeping track with int value at 2, and sets  
-           int value at 3 to 1 when done  
-           to 1  
 - `not` : !1 -> stack
 - `and` : 1 && 2 -> stack
 - `or` : 1 || 2 -> stack
+- `vpop` : removes element at pos 2 of vec 1 -> stack
+- `vpsh` : pushes back 2 on vector 1