%
% Alone
%
> \boxXX=
\vbox(0.0+0.0)x330.0
.\hbox(0.0+0.0)x330.0
..\glue 0.0
..\glue 210.0
..\glue -3.0
..\rule(2.0+2.0)x127.0
..\glue -4.0
..\glue 0.0
%
% n to h, f, b: exactly the same as "alone"
%
> \boxXX=
\vbox(0.0+0.0)x330.0
.\hbox(0.0+0.0)x330.0
..\glue 0.0
..\glue 210.0
..\glue -3.0
..\rule(2.0+2.0)x127.0
..\glue -4.0
..\glue 0.0
> \boxXX=
\vbox(0.0+0.0)x330.0
.\hbox(0.0+0.0)x330.0
..\glue 0.0
..\glue 210.0
..\glue -3.0
..\rule(2.0+2.0)x127.0
..\glue -4.0
..\glue 0.0
> \boxXX=
\vbox(0.0+0.0)x330.0
.\hbox(0.0+0.0)x330.0
..\glue 0.0
..\glue 210.0
..\glue -3.0
..\rule(2.0+2.0)x127.0
..\glue -4.0
..\glue 0.0
%
% h to h: default width; h to f,b: body separation
%
> \boxXX=
\vbox(0.0+0.0)x330.0
.\hbox(0.0+0.0)x330.0
..\glue 0.0
..\glue -1.0
% relax-width here
..\rule(0.5+0.5)x103.0
..\glue -2.0
..\glue -2.0
..\rule(1.0+1.0)x115.0
..\glue -3.0
..\glue -110.0
..\glue -2.0
% also relax-width
..\rule(0.5+0.5)x236.0
..\glue -4.0
..\glue -120.0
..\glue -3.0
..\rule(2.0+2.0)x127.0
..\glue -4.0
..\glue 0.0
%
% Body separation
%
> \boxXX=
\vbox(0.0+0.0)x330.0
.\hbox(0.0+0.0)x330.0
..\glue 0.0
..\glue -1.0
% relax-width here
..\rule(1.5+1.5)x103.0
..\glue -2.0
..\glue -2.0
..\rule(1.0+1.0)x115.0
..\glue -3.0
..\glue -110.0
..\glue -2.0
% also relax-width
..\rule(1.5+1.5)x236.0
..\glue -4.0
..\glue -120.0
..\glue -3.0
..\rule(2.0+2.0)x127.0
..\glue -4.0
..\glue 0.0
> \cals@tmpIII=macro:
->3pt.
%
% f to h and b: never happens, body separation; f to f: default width
% 
> \cals@tmpIII=macro:
->3pt.
> \cals@tmpIII=macro:
->1pt.
> \cals@tmpIII=macro:
->3pt.
%
% b to h: never happens, body separation; b to b: default, b to f: body 
%
> \cals@tmpIII=macro:
->3pt.
> \cals@tmpIII=macro:
->3pt.
> \cals@tmpIII=macro:
->1pt.