Same for the ATR where numbered codes were given for what was actually causing the takeoff limitation.
"Limitation Codes
0 – Dry Check: The wet/contaminated performance may be better than the
dry performance due to the definition of takeoff distance for
wet/contaminated runways having a screen height of 15 ft instead of 35 ft. In this case, dry performance must be used (regulation) and are therefore
automatically displayed on the wet/contaminated chart with the limitation
code 0"