diff -r 3b05a8b45b95 -r f67949050a32 src/zero.rs
--- a/src/zero.rs	Tue Oct 22 08:27:45 2024 -0500
+++ b/src/zero.rs	Tue Oct 22 08:39:46 2024 -0500
@@ -1,3 +1,6 @@
+/*!
+Implementation of the the constant zero function on a manifold.
+*/
 
 use alg_tools::mapping::Apply;
 use crate::manifold::ManifoldPoint;