HERE-DOCUMENTS
The body reaches the command as a single word, and one quote in the delimiter decides whether it arrives as typed
Built as a memo rather than a table: the thing worth hanging it up for reads across the room, with the full reference in smaller type below it.
Three sizes in one archive — from a sheet on the fridge to a poster on the wall.
Read from top to bottom: what reaches the command under the two spellings of the delimiter, which expansions happen in the body, and which whitespace matters. Every line was printed by /bin/sh.