Derive reference doesn't mention group

[manfredlotz]

Please complete the following tasks

• I have searched the discussions
• I have searched the open and rejected issues

Clap Version

3.1.18

Describe your use case

The derive tutorial does mention group but the derive reference doesn't. I think it should be mentioned there as well.

Describe the solution you'd like

Mention group in the clap derive reference.

Alternatives, if applicable

No response

Additional Context

No response

[epage]

We have intentionally decided to not enumerate every possible attribute in the derive documentation due to the maintenance burden of that. Instead the derive reference explains how raw attributes work and reminds people when looking at Command attributes that raw attributes exist, linking to the relevant documentation for using those raw attributes.

[manfredlotz]

Ok, I only came up with this because somebody asked about it here https://users.rust-lang.org/t/clap-derive-required-flags-or-options-that-are-exclusive-to-each-other/75998/4 .

[epage]

I've created #4090 to further discuss the documentation of raw attributes as this keeps coming up