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version 1.45, 2002/03/20 17:10:38 version 1.46, 2002/10/21 16:58:03
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 <html xmlns="http://www.w3.org/1999/xhtml">  <html xmlns="http://www.w3.org/1999/xhtml">
 <head>  <head>
   <title>The Languages of Thot</title>    <title>The Languages of Thot</title>
   <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />  
 </head>  </head>
   
 <body>  <body>
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 <h4>Translated from French by Ethan Munson</h4>  <h4>Translated from French by Ethan Munson</h4>
   
 <h4>Version of March 5, 2002</h4>  <h4>Version of October 21, 2002</h4>
   
 <p>© 1996-2002 INRIA</p>  <p>© 1996-2002 INRIA</p>
 <hr />  <hr />
Line 6094  translator.</p> Line 6093  translator.</p>
 <p>A buffer is a unit of memory managed by the translator, which can either  <p>A buffer is a unit of memory managed by the translator, which can either
 contain text read from the terminal during the translation (see the <a  contain text read from the terminal during the translation (see the <a
 href="#sectc5212"><tt>Read</tt> rule</a>), or the name of the last picture  href="#sectc5212"><tt>Read</tt> rule</a>), or the name of the last picture
 (bit-map) encountered by the translator in its traversal of the document.  (bit-map) encountered by the translator in its traversal of the document, or
 Remember the pictures are stored in files that are separate for the document  a character string set by program. Remember the pictures are stored in files
 files and that the canonical form contains only the names of the files in  that are separate for the document files and that the canonical form contains
 which the pictures are found.</p>  only the names of the files in which the pictures are found.</p>
   
 <p>Thus, there are two types of buffers: buffers for reading from the  <p>Thus, there are three types of buffers: buffers for reading from the
 terminal (filled by the <tt>Read</tt> rule) and the buffer of picture names  terminal (filled by the <tt>Read</tt> rule), the buffer of picture names
 (containing the name of the last picture encountered). A translation schema  (containing the name of the last picture encountered) and buffer filled by
 can use either type, one or several read buffers and one (and only one)  programs (see function <code>SetVariableBuffer</code> in the code) also
 picture name buffer.</p>  called <em>variable buffers</em>. A translation schema can use all types of
   buffers, one or several read buffers, one (and only one) picture name buffer,
   and one or several variable buffers.</p>
   
 <p>If any buffers are used, the <tt>BUFFERS</tt> keyword must be present,  <p>If any buffers are used, the <tt>BUFFERS</tt> keyword must be present,
 followed by declarations of every buffer used in the translation schema. Each  followed by declarations of every buffer used in the translation schema. Each
 buffer declaration is composed only of the name of the buffer, chosen freely  buffer declaration is composed of the name of the buffer, chosen freely by
 by the programmer. The picture name buffer is identified by the  the programmer, followed by a keyword between parentheses to define the type
 <tt>Picture</tt> keyword, between parentheses, following the buffer name. The  of the buffer (read buffers do not require any keyword, as they are the
 <tt>Picture</tt> keyword may only appear once. Each buffer declaration is  default type). The picture name buffer is identified by the <tt>Picture</tt>
 terminated by a semicolon.</p>  keyword, between parentheses, following the buffer name. The <tt>Picture</tt>
 <pre>     BufferSeq = Buffer &lt; Buffer &gt; .  keyword may only appear once. A variable buffer is identified by the
      Buffer    = BufferID [ '(' 'Picture' ')' ] ';' .  <tt>Variable</tt> keyword, between parentheses, following the buffer name.
      BufferID  = NAME .</pre>  Each buffer declaration is terminated by a semicolon.</p>
   <pre>     BufferSeq  = Buffer &lt; Buffer &gt; .
        Buffer     = BufferID [ '(' BufferType ')' ] ';' .
        BufferID   = NAME .
        BufferType = 'Picture' / 'Variable' .</pre>
   
 <blockquote class="example">  <blockquote class="example">
   <p><strong>Example:</strong></p>    <p><strong>Example:</strong></p>
Line 8222  END</pre> Line 8227  END</pre>
 LineLength    = NUMBER .  LineLength    = NUMBER .
   
 BufferSeq     = Buffer &lt; Buffer &gt; .  BufferSeq     = Buffer &lt; Buffer &gt; .
 Buffer        = BufferID [ '(' 'Picture' ')' ] ';' .  Buffer        = BufferID [ '(' BufferType ')' ] ';' .
 BufferID      = NAME .  BufferID      = NAME .
   BufferType    = 'Picture' / 'Variable' .
   
 CounterSeq    = Counter &lt; Counter &gt; .  CounterSeq    = Counter &lt; Counter &gt; .
 Counter       = CounterID [ ':' CounterFunc ] ';' .  Counter       = CounterID [ ':' CounterFunc ] ';' .
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