2 files changed, 4 insertions, 1 deletions
diff --git a/README b/README
index 911f578..1570c9d 100644
--- a/README
+++ b/README
@@ -249,6 +249,7 @@ TODO
 
 - More advanced commands for the simulator (cf Jonathan's simulator)
 - RAM reads give result immediately
+- Optimisation : SELECT/SLICE a variable which is a CONCAT
 
 NEXT STEPS
 ----------
diff --git a/csim/sim.h b/csim/sim.h
index 27b492d..d77465a 100644
--- a/csim/sim.h
+++ b/csim/sim.h
@@ -114,15 +114,17 @@ typedef struct {
 
 // The functions for doing stuff with these data structures
 
+// Implemented in load.c
 t_program *load_dumb_netlist(FILE *stream);
 void add_rom(const char *prefix, FILE *file);
 
+// Implemented in sim.c
 t_machine *init_machine(t_program *p);
 void read_inputs(t_machine *m, FILE *stream);
 void machine_step(t_machine *m);
 void write_outputs(t_machine *m, FILE *stream);
 
-// util
+// Implemented in util.c
 int pow2(int exp);
 t_value read_bool(FILE *stream, t_value *mask);
 int is_prefix(char *prefix, char *str);