Revamp try page

Author: chenglou

pages/docs/manual/latest/try.mdx

@@ -1,12 +1,35 @@
 ---
 title: "Try"
-description: "Try ReScript via CLI"
+description: "Try ReScript via Command Line"
 canonical: "/docs/manual/latest/try"
 ---
 
-<!-- TODO: rename to Command Line, document options like -format -->
+## Quickly Evaluate Code
 
-# Try via CLI
+Use `bsc -e`:
+
+```sh
+❯ bsc -e 'let add = (x, y) => x + y'
+// Generated by ReScript, PLEASE EDIT WITH CARE
+'use strict';
+
+
+function add(x, y) {
+  return x + y | 0;
+}
+
+exports.add = add;
+/* No side effect */
+```
+
+You can pipe the output to Node to run it:
+
+```sh
+❯ bsc -e 'let add = (x, y) => x + y; Js.log(add(1, 2))' | node
+3
+```
+
+## Quickly Compile A Single File
 
 You can compile a file directly via `bsc MyFile.res`:
 
@@ -23,52 +46,44 @@ Js.log(fib(0))
 
 ```sh
 ❯ bsc MyFile.res
-// Generated by BUCKLESCRIPT, PLEASE EDIT WITH CARE
+// Generated by ReScript, PLEASE EDIT WITH CARE
 'use strict';
+
+
 function fib(n) {
   if (n === 0 || n === 1) {
     return n;
   } else {
     return fib(n - 1 | 0) + fib(n - 2 | 0) | 0;
   }
 }
+
 console.log(fib(0));
+
 exports.fib = fib;
 /*  Not a pure module */
 ```
 
-You can also get the inferred signature directly via `bsc -i MyFile.res`
+You can also get the inferred type signatures directly via `bsc -i MyFile.res`
 
-```res sig
+```sh
+❯ bsc -i MyFile.res
 let fib: int => int
 ```
 
-You can quickly test code snippets in the console:
+**Note** that this is for quick tests. For real projects, use our [build system](build-overview.md).
 
-```sh
-❯ bsc -e 'let add = (x, y) => x + y'
-// Generated by ReScript, PLEASE EDIT WITH CARE
-'use strict';
-
-
-function add(x, y) {
-  return x + y | 0;
-}
-
-exports.add = add;
-/* No side effect */
-```
-
-Pass the `-i` flag to infer the signature:
+## Format Code
 
 ```sh
-❯ bsc -i -e 'let id = x => x'
-let id: 'a => 'a
+❯ bsc -format MyFile.res
+let rec fib = n => {
+  switch n {
+  | 0 | 1 => n
+  | n => fib(n - 1) + fib(n - 2)
+  }
+}
+Js.log(fib(0))
 ```
 
-**To evaluate a script quickly, pipe the output to Node**:
-
-```sh
-❯ bsc -e 'let add = (x, y) => x + y; Js.log(add(1, 2))' | node
-3
-```
+Our [editor plugins](editor-plugins.md) come with formatting by default.