I'm opening this as a meta issue to track the documentation status of the DI attributes. I ran into some confusion aboutAsTaggedItem insymfony/symfony#48532 which prompted me to look for docs which are missing.

• AsDecorator[DependencyInjection] Add as decorator and inner service #16746
• AsTaggedItem[DependencyInjection] Add#[AsTaggedItem] documentation #17694
• Autoconfigure andAutoconfigureTag[DependencyInjection] Add#[Autoconfigure] and#[AutoconfigureTag] documentation #17695
• Autowire[DependencyInjection][HttpKernel] documentAutowire attribute #16629
• MapDecorated[DependencyInjection] Add as decorator and inner service #16746
• TaggedIterator[DependencyInjection] Autowire arguments using the #[TaggedIterator] attribute #17652
• TaggedLocator[DependencyInjection] Autowire arguments using the #[TaggedLocator] attribute #17662
• Target[DependencyInjection] Add#[Target] documentation #17696
• When[Configuration] Multiple environments in a single file #16313