diff --git a/src/main.rs b/src/main.rs
index ebbfb4a..4a91456 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -88,6 +88,7 @@ fn mopp(speed: u8, data: &[u8]) -> Vec<u8> {
 
     m.replace_range(m.len() - 2.., "11"); // EOW
 
+    // Extend to full bytes
     m = format!(
         "{1:0<0$}",
         (8 as f32 * (m.len() as f32 / 8 as f32).ceil()) as usize,
@@ -96,6 +97,7 @@ fn mopp(speed: u8, data: &[u8]) -> Vec<u8> {
 
     let mut res = Vec::<u8>::new();
 
+    // Convert string representation to "real" bits
     for i in (0..m.len()).step_by(8) {
         let value = u8::from_str_radix(&m[i..i + 8], 2).unwrap();
         res.push(value);