diff --git a/lib.py b/lib.py
index 7c99e0c..1a18502 100644
--- a/lib.py
+++ b/lib.py
@@ -82,7 +82,6 @@ def execute(program):
             elif ctx[0] == _ident("<"):
                 return ("number", 1.0 if subs[1][1] < subs[2][1] else 0.0)
             elif ctx[0] == _ident("conv"):
-                print(subs)
                 return (subs[1][1], float(subs[2][1]) if subs[1][1] == "number" else str(subs[2][1]))
             elif ctx[0] == _ident("all"):
                 ret = _execute(subs[1])
@@ -90,11 +89,13 @@ def execute(program):
                     ret = _execute(statement)
                 return ret
             elif ctx[0] in funcspace:
+                #print(subs)
                 prototype = funcspace[ctx[0]]
                 for idx, arg in enumerate(subs[1:]):
                     idx += 1
                     prototype = _recursereplace(prototype, ("identifier", f"${idx}"), arg)
                     #print(f"${idx}", prototype)
+                #print(prototype)
                 return _execute(prototype)
             else:
                 print("no such function", ctx[0])
@@ -108,12 +109,11 @@ def execute(program):
                 )
             return ctx
     for strand in program:
-#        try: _execute(strand)
-        _execute(strand)
-#        except Exception as e: 
-#            print("failed in", strand, "with", e)
-#            traceback.print_stack()
-#            exit()
+        try: _execute(strand)
+#        _execute(strand)
+        except Exception as e: 
+            print("failed in", strand, "with", e)
+            _execute(strand)
     #input()
 
 
diff --git a/lib/aids.klambda b/lib/aids.klambda
index be7097a..bf325cf 100644
--- a/lib/aids.klambda
+++ b/lib/aids.klambda
@@ -1,6 +1,8 @@
 : get it? because std?
 : i'm hilarious.
 
+INCLUDE:./lib/loop.klambda
+
 (defun spit
 	(miracle
 		"builtins" "print" (id $1))
diff --git a/lib/loop.klambda b/lib/loop.klambda
new file mode 100644
index 0000000..84770f4
--- /dev/null
+++ b/lib/loop.klambda
@@ -0,0 +1,11 @@
+DEFINE:loop:(defun loop\
+	(all\
+		statement\
+		(cond (= $1 $2)\
+			$1\
+			(loop (+ $1 1) $2)\
+		)\
+	)\
+)\
+(loop start end)\
+:start:end:statement
\ No newline at end of file
diff --git a/main.py b/main.py
index b5152d2..d271128 100644
--- a/main.py
+++ b/main.py
@@ -10,17 +10,35 @@ reps = ["(", ")", "\"", ","]
 f = open(sys.argv[1]).read()
 
 def expand(file):
-    tmp = file.split("\n")
+    tmp = file.replace("\\\n", "").split("\n")
+    defs = {}
     for idx, i in enumerate(tmp):
+        parts = i.split(":")
         if len(i) < 1:
             continue
         elif i[:8] == "INCLUDE:":
-            tmp[idx] = expand(open(i[8:]).read())
+            tdefs, tmp[idx] = expand(open(i[8:]).read())
+            defs.update(tdefs)
+        elif i[:7] == "DEFINE:":
+            parts = parts[1:]
+            defs[parts[0]] = (parts[2:], parts[1].replace("\t", " "))
+            tmp.pop(idx)
         elif i[0] == ":":
             tmp.pop(idx)
-    return "\n".join(tmp)
-
-f = expand(f)
+        elif i.split(":")[0] in defs.keys():
+            parts = i.split(":")
+            args, exp = defs[parts[0]]
+
+            for arg_idx, arg in enumerate(parts[1:]):
+                exp = exp.replace(
+                    args[arg_idx], arg
+                )
+            #print(exp, "exp")
+            tmp[idx] = exp
+        #print(i, "\nsep")
+    return (defs, "\n".join(tmp))
+
+f = expand(f)[1]
 
 
 f = f.replace(" ", " RDANEELOLIVAW ") # spacer
diff --git a/test.klambda b/test.klambda
index cd07566..89cf061 100644
--- a/test.klambda
+++ b/test.klambda
@@ -4,33 +4,21 @@ INCLUDE:./lib/aids.klambda
 (spit
 	("lol swej" (+ 9000 1) a)
 )
-(spit ((cond (= "10" (+ 1 9)) "same" "not same")))
+(spit (cond (= "10" (+ 1 9)) "same" "not same"))
 (cond ("", (+ 0 1))
-	(id spit ("one"))
-	(id spit ("zero"))
+	(id spit "one")
+	(id spit "zero")
 )
 
-(spit ("how old are you? > "))
+(spit "how old are you? > ")
 (def age (conv number (input)))
-(spit 
-	(
-		(cond (> age 18)
-			"adult (hag)"
-			"not adult (uoh)"
-		)
-	)
-)
-
-(defun loop
-	(all
-		(spit ($1))
-		(cond (= $1 $2)
-			$1
-			(loop (+ $1 1) $2)
-		)
+(spit
+	(cond (> age 18)
+		"adult (hag)"
+		"not adult (uoh)"
 	)
 )
 
-(loop 0 5)
+loop:0:100:(spit (cond (% $1 15) (cond (% $1 5) (cond (% $1 3) $1 "fizz") "buzz") "fizzbuzz"))
 
 (thesis)
\ No newline at end of file