COMMENT ⊗   VALID 00004 PAGES
C REC  PAGE   DESCRIPTION
C00001 00001
C00002 00002	%\read16 to\pagenumber
C00003 00003	\ninepoint\noindent
C00023 00004	% now we print the answers, if any
C00024 ENDMK
C⊗;
%\read16 to\pagenumber
\input manmac
\tenpoint
\pageno=800
%\pageno=\pagenumber
\def\rhead{Experimental Pages for The \TeX book}
\def\chapno{ X}
{\catcode`\%=12 \immediate\write\ans{% Answers for galley proofs:}}
\ninepoint\noindent
The balancing act sets ↑|\vbadness| infinite while it is searching for
a suitable column height, so that ↑{underfull} vboxes won't be reported
unless the actual columns are bad after balancing. The columns in Appendix~I
have a lot of stretchability, since there's a ↑|\parskip|
of |0pt| |plus|~|.8pt| between adjacent entries, and since there is room for
more than 50 lines per column; therefore the |manmac| balancing routine tries
to make both the top and bottom baselines agree at the end of the index.
In applications where the glue is not so flexible it would be more
appropriate to let the right-hand column be a little short; the best
way to do this is probably to replace the command `|\unvbox3|' by
`|\dimen2=|↑|\dp||3| |\unvbox3| |\kern-\dimen2| ↑|\vfil|'.
% now we print the answers, if any

% that blank line will stop an unfinished \answer
\immediate\closeout\ans
\vfill\eject
\ninepoint
\input answers
\bye