I believe the first sentence of this section
* itemLabelRelativeRatingCutoff: When mass labeling map items, skip those with an effective rating of at least the current map level minus this value. "Effective Rating" equals rating, +1 for prototypes. "Map level" assumes -10/Materials is level 1, and increases with each change in depth. For example, a value of 2 will only label items with a rating that at least matches two floors down, or better (e.g. at -5/Factory it will not label items with ratings from below -7/Factory). This setting does not affect non-attachable items, which are always labeled. And note that item labels ignore all filters if mass labeling within 5 seconds of the previous mass labeling.
Should read either
"When mass labeling map items, skip those
without an effective rating of at least the current map level minus this value."
or
"When mass labeling map items, skip those with an effective rating of
less than the current map level minus this value."
