Code compliance complicates (but need not cancel) exit sign update.
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D002028:Building Codes / Q000331:legislation & jurisprudence*; D004559:Electric Wiring / Q000331:legislation & jurisprudence; D005390:Fires / Q000517:prevention & control; D008123:Location Directories and Signs; D008284:Maintenance and Engineering, Hospital / Q000191:economics / Q000331:legislation & jurisprudence*; D014481:United States