Ron Aaron wrote:
On Saturday 31 July 2010 23:25:24 Philip Taylor (Webmaster, Ret'd) wrote:
I would start by looking at your comparison with \null, Ron :
if you look at TB, p.~351, you will see that \null is defined
as \hbox {}, which is a pretty unlikely value for a null mark.
Hi, Phil --
That turns out to be a red-herring -- since even:
\message{marks are \firstmark,\botmark^^J}
gives no joy...
Yes, the other clue is in your preceding message :
Yes, absolutely sure. I wonder if my problem stems from the "mark" being
inside a vbox? If that's the problem, I don't know how I would get around it
See TB p.~259 : "Similarly. a \mark that occurs in internal vertical mode
goes into a \vbox, and it is not accessible in the main vertical list."
** Phil.
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