Using not predefined font sizes

Using not predefined font sizes

[Marcin Borkowski]

Hi,

the manual says that if I use \switchtobodyfont[48pt] (with the size
48pt not previously defined, then the interline space and other
parameters are taken from the nearest smaller body font environment is
that is already defined (co-typography.pdf, p. 13).  Then, why

\starttext
\switchtobodyfont[48pt]
Hello world!  Hello world!  Hello world!  Hello world!  Hello world!
Hello world!  Hello world!  Hello world!  Hello world!  Hello world!
Hello world!  Hello world!  Hello world!  Hello world!  Hello world!
Hello world!  Hello world!  Hello world!  Hello world!  Hello world!
Hello world!  Hello world!  Hello world!  Hello world!
\stoptext

works the same as

\starttext
\definebodyfontenvironment[48pt]
\switchtobodyfont[48pt]
Hello world!  Hello world!  Hello world!  Hello world!  Hello world!
Hello world!  Hello world!  Hello world!  Hello world!  Hello world!
Hello world!  Hello world!  Hello world!  Hello world!  Hello world!
Hello world!  Hello world!  Hello world!  Hello world!  Hello world!
Hello world!  Hello world!  Hello world!  Hello world!
\stoptext

i.e., correctly?  I expected too small interline space in the former
case, but it seems correct.  (That's fine for me, obviously, but I'd
like to understand that!)

Cheers

-- 
Marcin Borkowski (http://mbork.faculty.fmcs.amu.edu.pl)
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