diff --git a/Parameters.md b/Parameters.md
index cd98463..281708c 100644
--- a/Parameters.md
+++ b/Parameters.md
@@ -12,6 +12,8 @@ updated gradually.
 
 **Program:** `wave_billiard.c`
 
+**Initial condition in function `animation()`:** `init_planar_wave(XMIN + 0.05, 0.0, phi, psi, xy_in);`
+
 ```
 #define MOVIE 1         /* set to 1 to generate movie */
 
@@ -160,8 +162,6 @@ updated gradually.
 #define PID 	1.570796327
 
 
-init_planar_wave(XMIN + 0.05, 0.0, phi, psi, xy_in);
-
 ```
 
 ### 19 July 21 - 10,000 particles on a genus 10 surface ###