Ideas

Things the design would accommodate but that nobody has asked for yet. No promise — this file exists so an idea worth half an hour of thought is not re-thought from scratch in a year. Where one has become an issue, its entry says so.

An entry is deleted when it is built, or when it stops being a good idea.

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Opting out of the header-width floor

Every workbook column is at least as wide as its header (#114). A caller who wants the opening program's default width instead — a dense sheet of short codes under long headers, say — has no way to ask for it. A SheetOptions flag would do, and would leave WriteColumn.Width = null meaning "the header's width" as it does now; a sentinel width would be harder to read. Nobody has needed it: a wrapped header style already lets a long header sit over a narrow column, since only its longest word sets the floor.