[NTG-context] \setupbodyfont restricted to pt as unit

Hi! Is it by design, that \setupbodyfont only accepts “pt” as unit? %\setupbodyfont [18pt] % pt works \setupbodyfont [18bp] % bp fails \definefont [testbp] [Serif at 18bp] % bp works \setupinterlinespace [line=24bp] % bp works \starttext Foo\testbp Bar \stoptext Not that I see any difference between “pt” and “bp” with these small sizes, but usually all commands accepting a length unit can be fed with all TeX units. Marco