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diff --git a/macros/plain/contrib/blanks/blanks-sample.tex b/macros/plain/contrib/blanks/blanks-sample.tex
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+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%                 Example of use of macros
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+     
+\magnification=\magstephalf
+\font\AnsFont=cmtt10 at 14pt
+\parskip=1pc
+\parindent=15pt
+     
+\newcount\QuestionNumber
+\QuestionNumber=1
+     
+\def\Question{\hangindent\parindent\ignorespaces\noindent\number
+   \QuestionNumber.\space
+   \advance\QuestionNumber by 1}
+     
+\DoAnswerstrue
+     
+\noindent{\bf With Answers:}
+\medskip
+     
+\Question If all men are mortal, and Socrates is a man then 
+\Ans{Socrates is mortal man, as well as a Greek man}.
+     
+\Question Five time four equals \Ans{20.}
+     
+\Question  Mares eat \Ans{oats}, and does eat \Ans{oats}, and little
+lambs eat \Ans{ivy}.  I would eat ivy too, \Ans{wouldn't you}?
+     
+\DoAnswersfalse
+     
+\QuestionNumber=1
+\bigskip
+\noindent{\bf Without Answers:}
+\medskip
+     
+\Question If all men are mortal, and Socrates is a man then
+\Ans{Socrates is mortal man, as well as a Greek man}.
+     
+\Question Five time four equals \Ans{20.}
+     
+\Question  Mares eat \Ans{oats}, and does eat \Ans{oats}, and little lambs
+eat \Ans{ivy}.  A kid'll eat ivy too, \Ans{would you}?
+     
+\bye
diff --git a/macros/plain/contrib/blanks/blanks.tex b/macros/plain/contrib/blanks/blanks.tex
new file mode 100644
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+++ b/macros/plain/contrib/blanks/blanks.tex
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+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%               Fill-in-the-blank macros
+%                     Hal Varian
+%                   August 19, 1987
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+     
+     
+%list processing routines taken from TeXbook, p. 310-11
+     
+\def\dolist{\afterassignment\dodolist\let\next= }
+\def\dodolist{\ifx\next\endlist \let\next\relax
+  \else \\\let\next\dolist \fi
+  \next}
+\def\endlist{\endlist}
+     
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+     
+%print out answers or not?
+\newif\ifDoAnswers\DoAnswerstrue
+     
+%See if next token is a space.  If it is, set a low penalty for
+%line breaking.  Set box 0 to be the next token.  If we should
+%do answers, underscore box 0, back up and print box 0.  Otherwise
+%just underscore box 0.
+\def\\{\expandafter\if\space\next\penalty0\fi\setbox0=\hbox{\next}\ifDoAnswers
+  \underscore\llap{\raise2pt\box0}\else\underscore\fi}
+     
+%Underscore -- put in strut so there is enough space for handwriting.
+\def\underscore{\bigstrut\vrule height 0pt depth.5pt width\wd0}
+\def\bigstrut{\hbox{\vrule height 16pt width 0pt}}
+     
+\def\Ans#1{\space{\AnsFont {\dolist#1\endlist}\underscore}}
+
+%%% ----cutting here would not be a bad idea-----------------------