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From the following discussion from !4925 (merged) should be addressed:

• @matthijs started a discussion: (+2 comments)

  I am not too fond on having too-many. I would prefer an option that would disable the iteration value checking.

  Either way, this needs to be documented. Probably the manfile is the best place for it.

This option should be documented. There are more test options that should be documented.

1. Document dnssec-signzone -H too-many
2. Find other undocumented test options
3. Document those.