A WOW (Classic BBC) addon shows the BIS info on the gear tooltip, and check the list on a browser.
Type /bb or /ybm in the chat window to open the browser.
The BIS data was migrated from ExoLink_BIS @俏俏作品, and now it changes to use the @蓝色隐士 bis data (P0 - P2).
If you want to customize BIS info, please go to the Data/{class_you_want_to_edit}.lua, and modify the Item register info.
Example
local bis = BIS:RegisterClass("Druid", "熊德") -- Class Info
...
BIS:BISItem(bis, "29098", "Head", "{anything you want to desc}", 1) -- Item info