> For the complete documentation index, see [llms.txt](https://trizen.gitbook.io/sidef-lang/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://trizen.gitbook.io/sidef-lang/programming_tasks/p/program_name.md).

# Program name

```ruby
say __MAIN__
if (__MAIN__ != __FILE__) {
    say "This file has been included!"
}
```