LToolsB0i corresponds to the B0i function in LoopTools. The only difference is that the id should be entered as a string, e.g. "b0" instead of b0.
LToolsB0i
B0i
id
"b0"
b0
See ?LoopTools`B0i for further information regarding this LoopTools symbol.
?LoopTools`B0i
Overview.