14.172 Expand

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Origin: lgc. Landing-place: terminal.

Lgc generates this progress message at verbosity level 4+ when it is about to macro expand the page during loading. During macro expansion, the body of the page is macro expanded according to definitions present in the codex of the page and the codices of all transitively referenced pages. Lgc hangs the output of macro expansion on the 'expansion' hook of the rack of the page. The body hangs on the 'body' hook of the rack. The body is the result of unpacking. Unpacking hangs the body on the 'body' hook and the body does not change afterwards. Hence, each reading of the page is done on basis of the same body, but the expansion may change from reading to reading because the codex may change from reading to reading.

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