Capture the Current test page text in the folio of the Markdown transposition being demonstrated (e.g., Plain)

[orcmid]

Whenever a current/ index.md is updated and saved, a copy should also be saved as a raw Markdown file in the folder for the template being exercised. For plain, that would be as plain.index.md.txt. Continue this until done and/or a different template is sued for current.

[orcmid]

I did this exactly as described and accounted for it in the construction/plain/plain.txt file.

It remains to make this part of the pattern in which template usage is tested and the results preserved.

I need at least an issue about that. This gets moe into how the construction structure for docEng is an example of its pattern.