Every track H reader is measured on this pair, never on a client drawing
(spec section 14). tests/fixtures/plant_pair.py writes pid.dxf and layout.dxf
with invented names and returns their truth, computed from the positions it
placed:
- the P&ID is room 1 of the layout stretched 1.3x and room 2 rearranged, so
21.8 % of the 55 tag pairs fall within 10 % of the median ratio (schematic)
while room 1 alone is 100 % at 1.3;
- service layers in English and Dutch, Russian supply / return words, one CIP
return drawn on the supply layer, sizes spelled as drafters do (an MTEXT
format run, %%c, \U+2205, the U+2300 sign, o-stroke, SMS, DN, 20x27), a
reducer, inline valves, an arc bend, a segment drawn twice;
- electrical texts in Russian with the power stated for all loads but one;
- a layout declaring inches over millimetre geometry, a stray line 5,000 km
out, two plan copies 100 m apart, wall outlines, room labels and wiring
callouts in four spellings.
Run lengths are the rectilinear MST of each run's tags, cable metres are
the Manhattan length rounded up after the 20 % allowance; the generator
refuses to write a pair whose own premises fail.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
