\centerline{Paragraphing experiments}
\vskip .5cm
\def\myParagraph{Mr.~Drofnats---or ``R. J.,'' as
he preferred to be called---%
was happiest when he was at work
typesetting beautiful documents.}
\newdimen\unit
\def\point#1 #2 {\rlap{\kern#1\raise#2\hbox{$\scriptstyle\bullet$}}}
\vskip .2in
\newcount\n \newdimen\x \newdimen\minX \newdimen\deltaX
\newcount\w \newcount\h
\def\doIt#1 #2 #3{
  %\tolerance=1000
  \raggedright
 \n=0
 \minX=#2 \deltaX=#3
 \x=\deltaX \multiply\x by#1 \advance\x by\minX
 \hbox{\unit=1pt
   \loop\ifnum\n<#1 \advance\n by1 \advance\x by-\deltaX
    \setbox0=\vbox{\hsize=\x\myParagraph\endgraf}
     \point{\the\wd0} {\the\ht0}
     \repeat}
 }
\hrule
\tolerance=10000
\vskip 6pt
\vbox{\hsize=248pt\myParagraph\par}
\vskip 6pt
\hrule
\vskip 6pt
\vbox{\hsize=50pt\myParagraph\par}
\vskip 6pt
\hrule
\vskip 6pt
\hbox{
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\point{50.0pt} {138.94444pt} 
}
\hrule
<<\doIt {100} {50pt} {2pt}>>
<<\hrule>>
\vfill\eject