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Plan lettering is in a shifted-glyph font (decoded +29). Power/LV symbols placed by hand from the rendered page at CLK text and legend-symbol positions. Page is rotated 90 degrees; coordinates are in the displayed page space. Positions E-400 already counts are marked already_counted.
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 1/4" = 1'-0" — 18 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