X09 · A card worth keeping

Whole input

Choose one full ordinary source from C01–C20, not an unseen held assessment.

Complete home source. Read it first; no real trial, purchase or public audience is required.

Useful product

Source identity, supplied detail, reader sentence, open question and keep/change reason.

Ways to make it

Reader card, small guide or private self-tour.

Scope and next offer

Source details and own contribution stay distinguishable; no public upload.

Keep an actual own first contribution, chosen version and useful reason. A faithful scribe, paper or directed layout works. Do not fill a missing result.