diff --git a/README.md b/README.md
index a750b11..5800c9b 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,13 @@
 This code if for an infection simulator.
 Runs only in console, however I may work on making it graphical.
 
+In Infection_Settings.txt, it must be written as:
+
+X=25
+Y=25
+
+The max (that looks good) is X=210 Y=45
+
 Things that will be added:
 
 Cells becoming uninfected.