Updated specs for jump position

spec/instructions.md

@@ -84,10 +84,10 @@ Pops n number of values from stack
 ---
 
 ## Jumps
-* _`Jump [index - integer>=0]`_  
-Jump execution to instruction at `index`. **Be careful using this, make sure you have used `Pop` to clear stack of unneeded elements**
-* _`JumpIf [index - integer>=0]`_  
-Pops integer from stack. If it is `1`, jumps execution to instruction at `index`. **Be careful using this, make sure you have used `Pop` to clear stack of unneeded elements**
+* _`Jump [jump position - string]`_  
+Jump execution to instruction at `jump position`. **Be careful using this, make sure you have used `Pop` to clear stack of unneeded elements**
+* _`JumpIf [jump position - string]`_  
+Pops integer from stack. If it is `1`, jumps execution to instruction at `jump position`. **Be careful using this, make sure you have used `Pop` to clear stack of unneeded elements**
 
 ---
 

spec/syntax.md

@@ -24,6 +24,20 @@ def 5
 
 One thing to keep in mind is that although instruction names are not case sensitive, keywords are. So don't write `dEf` instead of `def`.
 
+## Jumps
+To use a jump instruction (see `spec/instructions.md`), you need a jump position. This is done like:  
+
+```
+def 5
+	# some instructions here
+	someJumpPosition:
+	# instructions to be repeated
+	# some instructions that act as a loop condition
+	jumpIf someJumpPosition
+```
+
+In this example, `someJumpPosition` is the jump position. Jump position names are unique only inside the function. Meaning if you have used `someJumpPosition` in a function, you can not name another position that too, but outside that function, it's fine.
+
 ## Whitespace
 Whitespace can be either tab(s) or spaces, and is ignored, so whitespace is not necessary