diff --git a/ph7.go b/ph7.go
index 20c4f37..53ebe00 100644
--- a/ph7.go
+++ b/ph7.go
@@ -270,7 +270,7 @@ type Value C.ph7_value
 // TODO (*Value).IsResource
 // TODO (*Value).IsEmpty
 
-// TODO Init
+// ph7_lib_init is unnecessary when single-threaded, and possibly always.
 // TODO Config
 // TODO Shutdown
 // TODO IsThreadsafe
@@ -354,6 +354,7 @@ type ForeignFunction interface {
 //export call_foreign_function
 func call_foreign_function(ctx *C.ph7_context, argc C.int, argv **C.ph7_value) C.int {
 	fkey := C.ph7_context_user_data(ctx)
+	// TODO it looks like ph7 looks for a VFS at the user data pointer. WTF? Should we use it for that?
 	f := pointer.Restore(fkey).(ForeignFunction)
 	args := make([]*Value, 0, argc)
 	argvSlice := unsafe.Slice(argv, argc)