diff --git a/README.md b/README.md
index 859914a..075bdc6 100644
--- a/README.md
+++ b/README.md
@@ -74,6 +74,15 @@ linedef
 	lm_sampledist_bot = &lt;int&gt; (default: 0)
 }
 
+sidedef
+{
+	// Customizable sampling distance per sidedef. Will use the value from the ZDRayInfo actor by default.
+	lm_sampledist_line = &lt;int&gt; (default: 0)
+	lm_sampledist_top = &lt;int&gt; (default: 0)
+	lm_sampledist_mid = &lt;int&gt; (default: 0)
+	lm_sampledist_bot = &lt;int&gt; (default: 0)
+}
+
 sector
 {
 	// Customizable sampling distance for floors and ceilings.