amd/doc/texinfo.tex

635 % \topskip (p.114 of the TeXbook), the glue inserted is
637 % therefore, no glue is inserted, and the space between the headline and
641 % cause the glue on the previous page to be unduly stretched, because it
668 % \baselineskip glue before it, and (when the next line of text is done)
669 % \lineskip glue after it.  Thus, space below is not quite equal to space
3528     % Make this a paragraph so we get the \parskip glue and wrapping,
3538     % \parskip glue -- logically it's part of the @item we just started.
3541     % Stop a page break at the \parskip glue coming up.  However, if
3543     % \parskip glue; then the negative vskip we just inserted would
3546     % \parskip glue after all.  Section titles are handled this way also.
4822   % -\whatsitskip glue we're inserting is preceded by a
4837     % following glue (such as a \parskip) would be a breakpoint.  For example:
4846     % this make-up glue would be preceded by a non-discardable item
4938   % Remove any glue we may have, we'll be inserting our own.
5035       % fill leaders glue in \indexdotfill if the page number does fit.)
5189   % Note that glue won't work here, because glue does not exercise the
5763     \nobreak % Avoid page breaks at the interline glue.
5919     % Interline glue will be inserted when the vbox is completed.
5920     % That glue will be a valid breakpoint for the page, since it'll be
5937   % was followed by glue.
5941   % glue accumulate.  (Not a breakpoint because it's preceded by a
5944   % or the negative glue will cause weirdly wrong output, typically
6368   % \parskip glue (backspaced over by default) or the cartouche can
6817     % But do insert the glue.
8466     % \parskip glue, so insert it here too to equalize the space
8572     % start with \parskip glue, I guess.