diff --git a/automated_canister_filling.ic10 b/automated_canister_filling.ic10
index 03986e0..f2c3c85 100644
--- a/automated_canister_filling.ic10
+++ b/automated_canister_filling.ic10
@@ -1,6 +1,7 @@
-# automatic gas-canister filler.
-# only works with player-made cans, starter-cans
-# have different hashes that won't work
+# needs two volume pumps and a pipe analyzer
+# fill_pump points to the tank storage
+# evac_pump points back to the gas-feed
+# analyzer is on a pipe between punps and tank
 # !!! Remember to set volume pump to 10l !!! 
 
 alias tank_storage d0
@@ -53,4 +54,4 @@ l storage_pressure analyzer Pressure
 sgt gas_to_move storage_pressure 0
 # trigger evac pump
 s evac_pump On gas_to_move
-j start
\ No newline at end of file
+j start