Native record abstract forms are missing from the Abstract Format documentation

[slepher]

Describe the bug

The Abstract Format documentation on the maint-29 branch does not describe the abstract forms introduced for native records by EEP-79.

The document still describes only traditional tuple-based record declarations and operations. It does not document native-record declarations,
imports and exports, module-qualified native-record names, or anonymous native-record operations.

This is a documentation issue. The parser and compiler already implement these forms.

Expected behavior

The Abstract Format documentation should describe the native-record attributes introduced in OTP 29:

%% -record #Name{...}.
{attribute,ANNO,native_record,{Name,Fields}}

%% -export_record([Name1, ..., NameN]).
{attribute,ANNO,export_record,[Name1, ..., NameN]}

%% -import_record(Module,[Name1, ..., NameN]).
{attribute,ANNO,import_record,
{Module,[Name1, ..., NameN]}}

It should also describe module-qualified native-record operations:

%% #Module:Name{...}
%% or a corresponding qualified pattern
{record,ANNO,{Module,Name},Fields}

%% Expression#Module:Name{...}
{record,ANNO,Expression,{Module,Name},Fields}

%% Expression#Module:Name.Field
{record_field,ANNO,Expression,{Module,Name},Field}

And anonymous native-record operations using #_:

%% #_{...} in a pattern
{record,ANNO,[],Fields}

%% Expression#_{...}
{record,ANNO,Expression,[],Fields}

%% Expression#_.Field
{record_field,ANNO,Expression,[],Field}

The documentation should explain that:

• {Module,Name} represents a module-qualified native-record name.
• [] in the record-name position represents an anonymous native-record operation.
• These forms were introduced for native records and are distinct from traditional tuple-based record forms.

Affected versions

Erlang/OTP 29 documentation, including the current maint-29 branch.

Native records were introduced in OTP 29, so earlier releases are not affected.

Additional context

The current maint-29 source document does not mention native_record or the qualified and anonymous native-record representations:

• Abstract Format source on maint-29 (https://raw.githubusercontent.com/erlang/otp/refs/heads/maint-29/erts/doc/guides/absform.md)
• EEP-79: Native records (https://www.erlang.org/eeps/eep-0079)
• Native Records reference documentation (https://www.erlang.org/doc/system/ref_man_native_records.html)

EEP-79 explicitly notes that parse transforms and other tools consuming abstract forms must be updated for native records. Documenting the exact
representations is therefore necessary for third-party tooling.