diff --git a/docs2/src/cargo_helper/combine.rs b/docs2/src/cargo_helper/combine.rs
index 87305fc2..b55f9326 100644
--- a/docs2/src/cargo_helper/combine.rs
+++ b/docs2/src/cargo_helper/combine.rs
@@ -15,5 +15,6 @@ pub fn options() -> OptionParser<Options> {
     let switch = short('s').help("A switch").switch();
     let options = construct!(Options { argument, switch });
 
+    // Given the cargo command is `cargo pretty`.
     cargo_helper("pretty", options).to_options()
 }
diff --git a/docs2/src/cargo_helper/derive.rs b/docs2/src/cargo_helper/derive.rs
index 5d38a1ac..9aede496 100644
--- a/docs2/src/cargo_helper/derive.rs
+++ b/docs2/src/cargo_helper/derive.rs
@@ -3,7 +3,7 @@ use bpaf::*;
 //
 #[allow(dead_code)]
 #[derive(Debug, Clone, Bpaf)]
-#[bpaf(options("pretty"))]
+#[bpaf(options("pretty"))] // Given the cargo command is `cargo pretty`.
 pub struct Options {
     /// An argument
     argument: usize,
diff --git a/src/docs2/cargo_helper.md b/src/docs2/cargo_helper.md
index 118ec462..c0259ebe 100644
--- a/src/docs2/cargo_helper.md
+++ b/src/docs2/cargo_helper.md
@@ -14,6 +14,7 @@ pub fn options() -> OptionParser<Options> {
     let switch = short('s').help("A switch").switch();
     let options = construct!(Options { argument, switch });
 
+    // Given the cargo command is `cargo pretty`.
     cargo_helper("pretty", options).to_options()
 }
 
@@ -27,7 +28,7 @@ fn main() {
 
 ```no_run
 #[derive(Debug, Clone, Bpaf)]
-#[bpaf(options("pretty"))]
+#[bpaf(options("pretty"))] // Given the cargo command is `cargo pretty`.
 pub struct Options {
     /// An argument
     argument: usize,