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Fixture-type tags (P08.1W, P15.1W, E06W, E12.1W, E11.1W, E05W, E10.1W, BA, EX1, HUB) are live PDF text with exact positions -- extracted by word search on page.get_text('words'), deduplicated per tag. Circuit/switch-zone tags (e.g. '1,a', '15,h', '41/EMB', '41/EX', 'TRACK n', 'VS', 'OS') render correctly in the rasterized page image but do NOT appear in page.get_text() output at all (confirmed: 0 hits for 'TRACK', 'EMB', 'VS' substrings) -- they are CAD block inserts with baked/curve text, not extractable as unicode. Those symbols were read visually off zoomed crops but NOT exhaustively tallied within the 12-minute budget; see coverage_gaps.
Names come from: no legend on this sheet, so NECA 100-2006 is what a name rests on. It is the baseline for what a symbol MEANS, never for matching shapes — proportions differ per firm. Confirming a name here is a correction, and corrections are what build the firm's file.
Scale is 3/16" = 1'-0" — 13.5 points per foot. Read off the title block, so measurement off this sheet is available. A later correction flags any measurement taken under the old scale as stale rather than silently recomputing it.
RRE