diff --git a/TODO b/TODO
new file mode 100644
index 0000000..106f59a
--- /dev/null
+++ b/TODO
@@ -0,0 +1,4 @@
+Implement control stack
+	On if add if to control stack, every subsequent word gets added to a string until a then or an end. On then or end, execute teh string
+
+Implement BEGIN..UNTIL loops
diff --git a/rforth.py b/rforth.py
index 4715475..ebab4ee 100755
--- a/rforth.py
+++ b/rforth.py
@@ -1,6 +1,8 @@
 #!/usr/bin/python3
 import argparse
 stack = []
+heap = [0] * 10
+next_heap = 0
 compiling = False
 words = {}
 word_name = ""
@@ -56,6 +58,12 @@ def parse_input(input_string, say_ok=True):
                 _and()
             elif string == "or":
                 _or()
+            elif string == "!":
+                store()
+            elif string == "@":
+                fetch()
+            elif string == "heap":
+                dump_heap()
         else:
             if string == ";":
                 stop_compiling()
@@ -65,6 +73,19 @@ def parse_input(input_string, say_ok=True):
     if say_ok:
         print("ok.")
 
+def dump_heap():
+    print(heap)
+
+def store():
+    k = stack.pop(0)
+    v = stack.pop(0)
+    heap[k] = v
+
+def fetch():
+    k = stack.pop(0)
+    v = heap[k]
+    stack.insert(0, v)
+
 def rot():
     a = stack.pop(0)
     b = stack.pop(0)