[haxe.org/manual] Groups

# Groups - Haxe - The Cross-platform Toolkit

Haxe is an open source toolkit based on a modern, high level, strictly typed programming language.

[https://haxe.org/manual/std-regex-groups.html](https://haxe.org/manual/std-regex-groups.html)

Start by reading the linked Haxe manual page at haxe.org/manual/std-regex-groups.html and then review the five-comment thread for the requested change. The issue does not identify a documentation problem, target text, or acceptance criteria, so the work is not ready until the scope and definition of done are agreed.

Written by the indexing model from the issue text.