diff --git a/Cargo.toml b/Cargo.toml
index 00a8668..03269b3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ name = "runrs"
 version = "0.1.12"
 edition = "2018"
 license = "MIT/Apache-2.0"
-description = "Run Rust Scripts"
+description = "A Tool for Run Rust Scripts"
 readme = "README.md"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
diff --git a/src/main.rs b/src/main.rs
index 306b096..95ce6b2 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -16,7 +16,7 @@ fn main() {
 
     let args = env::args().skip(1).collect::<Vec<_>>();
     if args.is_empty() {
-        failure_and_exit!("runrs v{}, need arguments, `runrs --help` for help", env!("CARGO_PKG_VERSION"));
+        failure_and_exit!("runrs v{}, need arguments, `runrs -h` or `runrs --help` for help", env!("CARGO_PKG_VERSION"));
     }
     let first_argument = args.get(0).unwrap_or_else(|| failure_and_exit!("Must assign a script file name"));
     if first_argument == "--help" || first_argument == "-h" {
@@ -95,27 +95,30 @@ fn write_script_file_to_src(script_file: &str, cache_script_bin_name: &str) {
 fn print_help() {
     println!(r##"{} v{} - {}
 
-Help:
-runrs -h|--help
+Show help:
+$ runrs -h|--help
 
 Show template:
-runrs -t|--template
+$ runrs -t|--template
 
-Run Rust Script:
-runrs <script.rs> [arguments]
+Run script:
+$ runrs <script.rs> [arguments]
 
 Binaries dir:
 ~/Library/Caches/rust-script/binaries/release/
 
 Environment variables:
-| Variable             | Description                                                  |
-| -------------------- | ------------------------------------------------------------ |
-| HOME                 | User home, default by OS system                              |
-| RUNRS_SKIP_CACHE     | Skip compiled cached file, bool , turn on true, yes, on or 1 |
-| RUNRS_REBUILD        | Force rebuild, bool                                          |
-| RUNRS_SILENT_BUILD   | Build new binary in silent mode, bool                        |
-| RUNRS_RUST_SCRIPT    | rust_script command line bin file                            |
-| RUNRS_MAX_SCRIPT_LEN | Max script length, default 1MB                               |
+┌──────────────────────┬────────────────────────────────────────────────┐
+│ Variable             │ Description                                    │
+├──────────────────────┼────────────────────────────────────────────────┤
+│ HOME                 │ User home, default by OS system                │
+│ RUNRS_SKIP_CACHE     │ Skip compiled cached file, `bool`              │
+│ RUNRS_REBUILD        │ Force rebuild, `bool`                          │
+│ RUNRS_SILENT_BUILD   │ Build new binary in silent mode, `bool`        │
+│ RUNRS_RUST_SCRIPT    │ `rust_script` command line bin file            │
+│ RUNRS_MAX_SCRIPT_LEN │ Max script length, default 1MB                 │
+└──────────────────────┴────────────────────────────────────────────────┘
+> Type `bool`: `true`, `yes`, `on` or `1` for true, otherwise false
 "##,
              env!("CARGO_PKG_NAME"),
              env!("CARGO_PKG_VERSION"),