Submitted Friday night. Below is the response this morning.

The first topic was addressed in the cran-comments.md (I said it was not supposed to be navigable in a browser, but I'll find some other way to represent it.

I don't know why these aren't appearing in the checks in Travis, AppVeyor, win-builder, or R-hub

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Thanks, we see:

• Found the following (possibly) invalid URLs:
  URL: https://bbmc.ouhsc.edu/redcap/api/
  From: inst/doc/TroubleshootingApiCalls.html
  Status: 501
  Message: Not Implemented

Pls fix.

• URL:
  https://stat.ethz.ch/R-manual/R-devel/library/base/html/data.frame.html
  From: README.md
  Status: 403
  Message: Forbidden

This is valid, but why not point to the help page for data.frames. You
can keep this, if you prefer.

• Found the following (possibly) invalid file URI:
  URI: CONDUCT.md
  From: README.md

Please either include the file or point to it via a fully specified URL
unless you remove the link.

Please fix and resubmit.