LBP vs. LWL

Use LWL unless you need LBP.

LWL is usually good enough. 
Use it to specify the length over which trim is to be reported.

Precede Status reports with,
  LWL OFF if you want to see trim as an angle and draft at the LCF
  LWL x if you want to see trim as a draft difference over length x and draft at the LCF
  LWL x1, x2 if you want to see drafts at two locations
  LBP x1, x2, x3 if you want to see drafts at three locations

If LBP is in effect, it is also used by COMPONENT to define the length for block and
prismatic coefficients. Usually LBP is better OFF.