Added validate method, and docs.

docs/src/guide/movescript/reference.md

@@ -11,10 +11,28 @@ ms.run("2F")
 
 Runs the given `script` string as a movescript, and optionally a `settings` table can be provided. Otherwise, [default settings](settings.md) will be used.
 
+For example:
+
+```lua
+local ms = require("movescript")
+ms.run("3F2R3B2LUD", {debug=true})
+```
+
 ## `runFile(filename, settings)`
 
 Reads content from the given filename and executes it as a script. Just like with `run`, an optional `settings` table can be provided.
 
+## `validate(script, settings)`
+
+Validates the given `script`, by parsing its instructions in a wrapped [`pcall`](https://www.lua.org/pil/8.4.html). It returns `true` if the script is valid, or `false` and an error message describing why the script is not valid.
+
+For example:
+
+```lua
+local ms = require("movescript")
+local status, message = ms.validate("not a valid script.")
+```
+
 ## `defaultSettings`
 
-A table containing the default settings for any script executed by the movescript module.
+A table containing the default [settings](./settings.md) for any script executed by the movescript module.

src/movescript.lua

@@ -207,4 +207,8 @@ function movescript.runFile(filename, settings)
     movescript.run(script, settings)
 end
 
+function movescript.validate(script, settings)
+    return pcall(function () parseScript(script, settings) end)
+end
+
 return movescript