diff --git a/src/core.nim b/src/core.nim
index a217456..cd121d2 100644
--- a/src/core.nim
+++ b/src/core.nim
@@ -174,6 +174,18 @@ proc command*(cmnd: string, dataStack: var TStack, vars, gvars: var PType) =
     if first.kind == ntInt and second.kind == ntInt:
       dataStack.push(newBool(second.iValue < first.iValue))
   
+  of "and":
+    var first = dataStack.pop()
+    var second = dataStack.pop()
+    if first.kind == ntBool and second.kind == ntBool:
+      dataStack.push(newBool(second.bValue and first.bValue))
+
+  of "or":
+    var first = dataStack.pop()
+    var second = dataStack.pop()
+    if first.kind == ntBool and second.kind == ntBool:
+      dataStack.push(newBool(second.bValue or first.bValue))
+
   of "=":
     var first = dataStack.pop()
     var second = dataStack.pop()
@@ -280,13 +292,38 @@ proc command*(cmnd: string, dataStack: var TStack, vars, gvars: var PType) =
     else:
       raise invalidTypeErr($first.kind & " and " & $second.kind, "float and float", "pow")
   
+  of "round":
+    var first = dataStack.pop()
+    if first.kind == ntFloat:
+      dataStack.push(newInt(round(first.fValue)))
+    else:
+      raise invalidTypeErr($first.kind, "float", "round")
+  
     # Type conversion
+  of "type":
+    var first = dataStack.pop()
+    dataStack.push(newString($first.kind))
+    
   of "int>float":
     var first = dataStack.pop()
     if first.kind == ntInt:
       dataStack.push(newFloat(float(first.iValue)))
     else:
       raise invalidTypeErr($first.kind, "int", "int>float")
+      
+  of "float>int":
+    var first = dataStack.pop()
+    if first.kind == ntFloat:
+      dataStack.push(newInt(int(first.fValue)))
+    else:
+      raise invalidTypeErr($first.kind, "float", "float>int")
+      
+  of "string>int":
+    var first = dataStack.pop()
+    if first.kind == ntString:
+      dataStack.push(newInt(first.value.parseInt()))
+    else:
+      raise invalidTypeErr($first.kind, "string", "string>int")
   
     # Exception handling
   of "try":
diff --git a/src/interpreter.nim b/src/interpreter.nim
index c0fea70..7b7aa98 100644
--- a/src/interpreter.nim
+++ b/src/interpreter.nim
@@ -109,6 +109,21 @@ proc toString*(item: PType, stack = False): string =
     else:
       raise newException(ERuntimeError, errorLine() & "Error: Unexpected AstNode in `$`, " & $item.node.kind)
 
+proc `$`*(kind: TTypes): string =
+  case kind
+  of ntInt: return "int"
+  of ntFloat: return "float"
+  of ntString: return "string"
+  of ntBool: return "bool"
+  of ntList: return "list"
+  of ntQuot: return "quot"
+  of ntDict: return "dict"
+  of ntNil: return "nil"
+  of ntCmnd: return "__cmnd__"
+  of ntVar: return "var"
+  of ntFunc: return "__func__"
+  of ntASTNode: return "__ASTNode__"
+
 proc isEqual*(first, second: PType): bool =
   if first.kind == second.kind:
     case first.kind
diff --git a/src/system.nael b/src/system.nael
index 41a1148..73e93a6 100644
--- a/src/system.nael
+++ b/src/system.nael
@@ -23,3 +23,6 @@ each [list, quo]
   );
   
 join [list, seperator] (i let, i 0 =, s let, s "" =, (i get, list get len 1 - <) (s get (i get 0 == !) (seperator get +) () if, list get, i get nth, + s swap =, i i get inc =) while, s get);
+
+<= [first, second] (first get second get == first get second get < or);
+>= [x,y] (y get x get <=);
\ No newline at end of file
diff --git a/todo.markdown b/todo.markdown
index 14a239d..d1b2b6a 100644
--- a/todo.markdown
+++ b/todo.markdown
@@ -5,7 +5,7 @@ nael todo list
 * tuples
 * dictionaries
 * Loading of C Libraries
-* Functions for converting types
+* Functions for converting types - **Partly Done**
   * `string>int`
   * `int>string`
   * `float>string`
@@ -14,4 +14,5 @@ nael todo list
   * **FIXED**
 * Make every error, report it's origin(function).
   * `[0, 0] Error: Wrong types... @ +`  -  **Partly done**
-* Make global variables work, the `def` keyword.
\ No newline at end of file
+* Make global variables work, the `def` keyword.
+* Make raising exceptions work, and change any functions that need exception raising, to use raise.
\ No newline at end of file