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diff --git a/examples/example-argument-parse/src/main.rs b/examples/example-argument-parse/src/main.rs
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+++ b/examples/example-argument-parse/src/main.rs
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+//! Example Argument Parse
+//!
+//! > This example demonstrates how to use the `parser` feature to parse user input
+//!
+//! Run:
+//! ```bash
+//! cargo run --manifest-path examples/example-argument-parse/Cargo.toml --quiet -- transfer README.md --size 32kib
+//! cargo run --manifest-path examples/example-argument-parse/Cargo.toml --quiet -- transfer src/ --dir
+//! cargo run --manifest-path examples/example-argument-parse/Cargo.toml --quiet -- strict-transfer README.md
+//! cargo run --manifest-path examples/example-argument-parse/Cargo.toml --quiet -- strict-transfer --dir
+//! ```
+//!
+//! Output:
+//! ```plaintext
+//! file: README.md (32768)
+//! dir: src/ (1048576)
+//! file: README.md (1048576)
+//! Error: name is not provided
+//! ```
+
+use mingling::{macros::route, prelude::*};
+
+dispatcher!("transfer", CMDTransfer => EntryTransfer);
+dispatcher!("strict-transfer", CMDStrictTransfer => EntryStrictTransfer);
+
+pack!(ResultFile = (bool, usize, String)); // (IsDir, Size, Name)
+
+#[chain]
+fn handle_transfer_parse(args: EntryTransfer) -> Next {
+    // --------- IMPORTANT ---------
+    // First parse flag arguments (like --dir/-D), then positional arguments
+    let result: ResultFile = args
+        // Name --dir --size 20mib
+        //            ^^^^^^^^^^^^_ first
+        .pick::<bool>(["--dir", "-D"])
+        // Name --dir
+        //      ^^^^^_ second (or `-D`)
+        .pick_or::<usize>("--size", 1024 * 1024_usize)
+        // Name
+        // ^^^^_ finally, pick positional arg
+        .pick::<String>(())
+        .after(|str| str.trim().replace(" ", ""))
+        // Unpack to tuple (is_dir, size, name)
+        .unpack()
+        // Convert into ResultFile
+        .into();
+    // --------- IMPORTANT ---------
+    result
+}
+
+pack!(ErrorNoNameProvided = ());
+
+#[chain]
+fn handle_strict_transfer_parse(args: EntryStrictTransfer) -> Next {
+    // --------- IMPORTANT ---------
+    // Strict parsing: error immediately if the name is not provided
+    let result: ResultFile = route! { // Use `route!` to wrap a Picker that contains `or_route`
+        args
+            .pick::<bool>(["--dir", "-D"])
+            .pick_or::<usize>("--size", 1024 * 1024_usize)
+            // Finally parse the positional argument; if not found, route to `ErrorNoNameProvided`
+            .pick_or_route::<String, _>((), ErrorNoNameProvided::default().to_chain())
+            .after(|str| str.trim().replace(" ", ""))
+            .unpack()
+    }
+    // Convert into ResultFile
+    .into();
+    // --------- IMPORTANT ---------
+    result.to_chain()
+}
+
+#[renderer]
+fn render_result_file(result: ResultFile) {
+    let (is_dir, size, name) = result.into();
+    r_println!(
+        "{}: {} ({})",
+        if is_dir { "dir" } else { "file" },
+        name,
+        size
+    )
+}
+
+#[renderer]
+fn render_error_no_name_provided(_: ErrorNoNameProvided) {
+    r_println!("Error: name is not provided")
+}
+
+gen_program!();
+
+fn main() {
+    let mut program = ThisProgram::new();
+    program.with_dispatcher(CMDTransfer);
+    program.with_dispatcher(CMDStrictTransfer);
+    program.exec_and_exit();
+}