Example under _regex_arguments section is different from the explanation for the example itself?

[fishBone000]

https://github.com/zsh-users/zsh-completions/blob/d24f58d2f187a72697aa2781a730f65732cb2f6b/zsh-completions-howto.org?plain=1#L291-L299

The explanation for the example and the example itself seems a bit different?

The example seems to say that we should match:

• Any non-empty command
• Any branch below
  • word1(a|b|c)
  • word11(a|b|c)
    • Any branch below
      • word2(a|b|c)
      • word22(a|b|c)

But the explanation says something else, like the second word can be word2(a|b|c) or a filename.