diff --git a/Interfaces.md b/Interfaces.md
index 5c01290..58b60db 100644
--- a/Interfaces.md
+++ b/Interfaces.md
@@ -1,12 +1,14 @@
 ## ggs_vm_runner
 
 <pre>
-GameVm = ggs_vm_runner:start_link()
-ggs_vm_runner:define(GameVM, SourceCode)
-ggs_vm_runner:user_command(GameVM, User, Command, Args)
+ggs_vm_runner:start_link() -> GameVm
+ggs_vm_runner:define(GameVM, SourceCode) -> ok
+ggs_vm_runner:user_command(GameVM, User, Command, Args) -> ok
 </pre>
 
+## ggs_server
 <pre>
-handle_cast({server, hello, Headers}, State)
-handle_cast({server, define, Headers, Data}, State)
-handle_cast({game, command, Headers, Data}, State)
\ No newline at end of file
+handle_cast(stop, State) -> {stop, normal, State}
+handle_cast({server, hello, Headers}, State) -> ok
+handle_cast({server, define, Headers, Data}, State) -> ok
+handle_cast({game, command, Headers, Data}, State) -> ok</pre>
\ No newline at end of file