\printlength{length} prints the value of a LaTeX length in the units specified by \uselengthunit{unit}, where "unit" may be any TeX length unit except for scaled point. That is, "unit" may be any of: pt, pc, in, mm, cm, bp, dd or cc. When the unit is pt, the printed length value will include any stretch or shrink; otherwise these are not printed. The "unit" argument may also be PT, in which case length values will be printed in pt units but without any stretch or shrink values. An unknown value for "unit" is treated as though it had been specified as pt. The authors are Peter R. Wilson and Harald Harders.