TODO: Documentation for the `while` command

1st chunk of `lang-guide/chapters/flow_control/while.md`

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# `while`

See the [`while` Help](/commands/docs/while.html).

_TODO_ - If you can provide detailed information on this command, beyond what is available in the Help, please consider contributing a PR. Click below to ...

Title: TODO: Documentation for the `while` command

Summary

This section indicates that the documentation for the `while` command is incomplete and encourages contributions to improve it. It directs users to the existing help documentation and invites them to submit a pull request with more detailed information.