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version 1.42, 2002/01/21 08:45:48 version 1.43, 2002/01/23 12:22:56
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 <h4>Translated from French by Ethan Munson</h4>  <h4>Translated from French by Ethan Munson</h4>
   
 <h4>Version of January 14, 2002</h4>  <h4>Version of January 23, 2002</h4>
   
 <p>© 1996-2002 INRIA</p>  <p>© 1996-2002 INRIA</p>
 <hr />  <hr />
Line 3012  A semi-colon terminates each declaration Line 3012  A semi-colon terminates each declaration
 <p>In the case of a character string, the keyword <tt>Text</tt> can be  <p>In the case of a character string, the keyword <tt>Text</tt> can be
 followed by the name of an script (for example, <tt>Greek</tt> or  followed by the name of an script (for example, <tt>Greek</tt> or
 <tt>Latin</tt>) in which the constant's text should be expressed. If the  <tt>Latin</tt>) in which the constant's text should be expressed. If the
 script name is absent, the Latin script is used. When the script name  script name is absent, the Latin script is used. When the script name is
 is present, only the first letter of the script name is interpreted. Thus,  present, only the first letter of the script name is interpreted. Thus, the
 the words <tt>Greek</tt> and <tt>Grec</tt> designate the same script. In  words <tt>Greek</tt> and <tt>Grec</tt> designate the same script. In current
 current versions of Thot, only the Greek and Latin scripts are  versions of Thot, only the Greek and Latin scripts are available.</p>
 available.</p>  
 <pre>                 'CONST' ConstSeq  <pre>                 'CONST' ConstSeq
      ConstSeq   = Const &lt; Const &gt; .       ConstSeq   = Const &lt; Const &gt; .
      Const      = ConstID '=' ConstType ConstValue ';' .       Const      = ConstID '=' ConstType ConstValue ';' .
Line 3233  following rules are considered to be the Line 3232  following rules are considered to be the
    Adjust:            Enclosing =;     Adjust:            Enclosing =;
    Hyphenate:         Enclosing =;     Hyphenate:         Enclosing =;
    Direction:         Enclosing =;     Direction:         Enclosing =;
      UnicodeBidi:       Enclosing =;
    PageBreak:         Yes;     PageBreak:         Yes;
    LineBreak:         Yes;     LineBreak:         Yes;
    InLine:            Yes;     InLine:            Yes;
Line 4041  rules are terminated by a semicolon.</p> Line 4041  rules are terminated by a semicolon.</p>
                 'Adjust' ':'        AdjustInherit /                  'Adjust' ':'        AdjustInherit /
                 'Hyphenate' ':'     BoolInherit /                  'Hyphenate' ':'     BoolInherit /
                 'Direction' ':'     DirInherit /                  'Direction' ':'     DirInherit /
                   'UnicodeBidi' ':'   BidiInherit /
                 'PageBreak' ':'     Boolean /                  'PageBreak' ':'     Boolean /
                 'LineBreak' ':'     Boolean /                  'LineBreak' ':'     Boolean /
                 'InLine' ':'        Boolean /                  'InLine' ':'        Boolean /
Line 4732  of the attribute is used.</p> Line 4733  of the attribute is used.</p>
   minimum        = NUMBER .</pre>    minimum        = NUMBER .</pre>
   
 <p>The properties which can be obtained by inheritance are hyphenation,  <p>The properties which can be obtained by inheritance are hyphenation,
 writing direction, interline spacing, character font (font family), font  writing direction, Unicode-bidi, interline spacing, character font (font
 style, font size, visibility, indentation, underlining, alignment of text,  family), font style, font size, visibility, indentation, underlining,
 stacking order of objects, the style and thickness of lines, fill pattern and  alignment of text, stacking order of objects, the style and thickness of
 the colors of lines and characters.</p>  lines, fill pattern and the colors of lines and characters.</p>
 </div>  </div>
   
 <div class="subsection">  <div class="subsection">
Line 4765  boxes will be placed according to the li Line 4766  boxes will be placed according to the li
   
 <p>The <tt>Line</tt> rule does not have a parameter. The characteristics of  <p>The <tt>Line</tt> rule does not have a parameter. The characteristics of
 the lines that will be constructed are determined by the  the lines that will be constructed are determined by the
 <tt>LineSpacing</tt>, <tt>Indent</tt>, <tt>Adjust</tt>, <tt>Hyphenate</tt>  <tt>LineSpacing</tt>, <tt>Indent</tt>, <tt>Adjust</tt>, <tt>Hyphenate</tt>,
 and <code>Direction</code> rules. Moreover, the <a  <code>Direction</code> and <code>UnicodeBidi</code> rules. Moreover, the <a
 href="#insectd42226"><tt>Inline</tt> rule</a> permits the exclusion of  href="#insectd42226"><tt>Inline</tt> rule</a> permits the exclusion of
 certain elements from the line breaking process.</p>  certain elements from the line breaking process.</p>
   
Line 4877  followed by an equals sign.</p> Line 4878  followed by an equals sign.</p>
   
 <p>The <tt>Direction</tt> rule indicates the directionality of text: from  <p>The <tt>Direction</tt> rule indicates the directionality of text: from
 left to right, as for latin scripts, or from right to left, as for the Arabic  left to right, as for latin scripts, or from right to left, as for the Arabic
 or Hebrew scripts.</p>  or Hebrew scripts. This is used by the Unicode bidirectional algorithm.</p>
   
 <p>The writing direction property takes either a constant value  <p>The writing direction property takes either a constant value
 (<code>ltr</code> for left to right, or <code>rtl</code> for right to left)  (<code>ltr</code> for left to right, or <code>rtl</code> for right to left)
Line 4888  sign.</p> Line 4889  sign.</p>
      DirInherit =  'ltr' / 'rtl' / Kinship '=' .</pre>       DirInherit =  'ltr' / 'rtl' / Kinship '=' .</pre>
 </div>  </div>
   
 <p></p>  <p>The <code>UnicodeBidi</code> rule is the equivalent of the CSS2
   <code>unicode-bidi</code> property. It takes the same values and acts in the
   same way.</p>
   <pre>                   'Direction' ':' BidiInherit
        BidiInherit = 'Normal' / 'Embed' / 'Override' / Kinship '=' .</pre>
   
 <div class="subsubsection">  <div class="subsubsection">
 <h4><a name="sectd42226" id="sectd42226">Avoiding line breaking</a></h4>  <h4><a name="sectd42226" id="sectd42226">Avoiding line breaking</a></h4>
Line 6548  keyword.</p> Line 6553  keyword.</p>
 <h4><a name="sectd5284" id="sectd5284">Conditions on the scripts</a></h4>  <h4><a name="sectd5284" id="sectd5284">Conditions on the scripts</a></h4>
   
 <p>The character string base type (and only this type) can use the condition  <p>The character string base type (and only this type) can use the condition
 <tt>Script = a</tt> which indicates that the translation rule(s) should  <tt>Script = a</tt> which indicates that the translation rule(s) should only
 only apply if the script of the character string is the one whose name  apply if the script of the character string is the one whose name appears
 appears after the equals sign (or is not, if there is a preceding  after the equals sign (or is not, if there is a preceding <tt>NOT</tt>
 <tt>NOT</tt> keyword). This condition cannot be applied to translation rules  keyword). This condition cannot be applied to translation rules of an
 of an attribute.</p>  attribute.</p>
   
 <p>In the current implementation of Thot, the available scripts are the  <p>In the current implementation of Thot, the available scripts are the
 <tt>Latin</tt> script and the <tt>Greek</tt> script.</p>  <tt>Latin</tt> script and the <tt>Greek</tt> script.</p>
Line 6673  rules:</p> Line 6678  rules:</p>
   <li>those taking numeric values (<tt>Size, Indent, LineSpacing,    <li>those taking numeric values (<tt>Size, Indent, LineSpacing,
     LineWeight</tt>),</li>      LineWeight</tt>),</li>
   <li>those with values taken from a predefined list (<tt>Adjust, Hyphenate,    <li>those with values taken from a predefined list (<tt>Adjust, Hyphenate,
     Direction, Style, Weight, Font, UnderLine, Thickness,      Direction, UnicodeBidi, Style, Weight, Font, UnderLine, Thickness,
   LineStyle</tt>),</li>      LineStyle</tt>),</li>
   <li>those whose value is a name (<tt>FillPattern, Background,    <li>those whose value is a name (<tt>FillPattern, Background,
     Foreground</tt>).</li>      Foreground</tt>).</li>
 </ul>  </ul>
Line 7512  for which the translation rule block sho Line 7517  for which the translation rule block sho
   <li>rules taking numeric values: <tt>Size</tt>, <tt>Indent</tt>,    <li>rules taking numeric values: <tt>Size</tt>, <tt>Indent</tt>,
     <tt>LineSpacing</tt>, <tt>LineWeight</tt>,</li>      <tt>LineSpacing</tt>, <tt>LineWeight</tt>,</li>
   <li>rules whose values are taken from a predefined list (i.e. whose type is    <li>rules whose values are taken from a predefined list (i.e. whose type is
     an enumeration): <tt>Adjust</tt>, <tt>Hyphenate,Direction,      an enumeration): <tt>Adjust</tt>, <tt>Hyphenate,Direction, UnicodeBidi,
     <tt>Style</tt>, <tt>Weight</tt>, <tt>Font</tt>, <tt>UnderLine</tt>,      <tt>Style</tt>, <tt>Weight</tt>, <tt>Font</tt>, <tt>UnderLine</tt>,
     <tt>Thickness</tt>, <tt>LineStyle</tt>,</tt></li>      <tt>Thickness</tt>, <tt>LineStyle</tt>,</tt></li>
   <li>rules whose value is a name: <tt>FillPattern</tt>, <tt>Background</tt>,    <li>rules whose value is a name: <tt>FillPattern</tt>, <tt>Background</tt>,
Line 7632  recode these terminal elements of the do Line 7637  recode these terminal elements of the do
 of a translation schema are intended for this purpose, each specifying the  of a translation schema are intended for this purpose, each specifying the
 recoding rules for one type of terminal element.</p>  recoding rules for one type of terminal element.</p>
   
 <p>The recoding rules for character strings are grouped by scripts. There  <p>The recoding rules for character strings are grouped by scripts. There is
 is a group of rules for each script of the Thot document that must be  a group of rules for each script of the Thot document that must be
 translated. Each such group of rules begins with the <tt>TEXTTRANSLATE</tt>  translated. Each such group of rules begins with the <tt>TEXTTRANSLATE</tt>
 keyword, followed by the specification of the script to translate and the  keyword, followed by the specification of the script to translate and the
 recoding rules, between the <tt>BEGIN</tt> and <tt>END</tt> keywords unless  recoding rules, between the <tt>BEGIN</tt> and <tt>END</tt> keywords unless
 there is only one recoding rule for the script. The specification of the  there is only one recoding rule for the script. The specification of the
 script is not required: by default it is assumed to the Latin script (the  script is not required: by default it is assumed to the Latin script (the ISO
 ISO Latin-1 character set).</p>  Latin-1 character set).</p>
   
 <p>Each recoding rule is formed by a source string between apostrophes and a  <p>Each recoding rule is formed by a source string between apostrophes and a
 target string, also between apostrophes, the two strings being separated by  target string, also between apostrophes, the two strings being separated by
Line 7668  by the compiler as is the maximum length Line 7673  by the compiler as is the maximum length
 <p>The recoding rules for symbols and graphical elements are written in the  <p>The recoding rules for symbols and graphical elements are written in the
 same manner as the recoding rules for character strings. They are preceded,  same manner as the recoding rules for character strings. They are preceded,
 respectively, by the <tt>SYMBTRANSLATE</tt> and <tt>GRAPHTRANSLATE</tt> and  respectively, by the <tt>SYMBTRANSLATE</tt> and <tt>GRAPHTRANSLATE</tt> and
 so not require a specification of the script. Their source string is  so not require a specification of the script. Their source string is limited
 limited to one character, since, in Thot, each symbol and each graphical  to one character, since, in Thot, each symbol and each graphical element is
 element is represented by a single character. The symbol and graphical  represented by a single character. The symbol and graphical element codes are
 element codes are defined along with the <a href="#sect7">non-standard  defined along with the <a href="#sect7">non-standard character codes</a>.</p>
 character codes</a>.</p>  
   
 <blockquote class="example">  <blockquote class="example">
   <p><strong>Example:</strong></p>    <p><strong>Example:</strong></p>
Line 8020  Property        = 'VertRef' ':' HorizPos Line 8024  Property        = 'VertRef' ':' HorizPos
                   'Adjust' ':' AlignOrInherit /                    'Adjust' ':' AlignOrInherit /
                   'Hyphenate' ':' BoolInherit /                    'Hyphenate' ':' BoolInherit /
                   'Direction' ':' DirInherit /                    'Direction' ':' DirInherit /
                     'UnicodeBidi' ':' BidiInherit /
                   'PageBreak' ':' Boolean /                    'PageBreak' ':' Boolean /
                   'LineBreak' ':' Boolean /                    'LineBreak' ':' Boolean /
                   'InLine' ':' Boolean /                    'InLine' ':' Boolean /
Line 8127  Alignment       = 'Left' / 'Right' / 'VM Line 8132  Alignment       = 'Left' / 'Right' / 'VM
                   'LeftWithDots' .                    'LeftWithDots' .
   
 DirInherit      = 'ltr' / 'rtl' / Kinship '=' .  DirInherit      = 'ltr' / 'rtl' / Kinship '=' .
   BidiInherit     = 'Normal' / 'Embed' / 'Override' / Kinship '=' .
   
 DistOrInherit   = Kinship InheritedDist / Distance .  DistOrInherit   = Kinship InheritedDist / Distance .
 InheritedDist   = '=' / '+' AbsDist / '-' AbsDist .  InheritedDist   = '=' / '+' AbsDist / '-' AbsDist .
Line 8417  Target        = STRING .</pre> Line 8423  Target        = STRING .</pre>
 <div class="section">  <div class="section">
 <h2><a name="sectb71" id="sectb71">Characters</a></h2>  <h2><a name="sectb71" id="sectb71">Characters</a></h2>
   
 <p>The characters of the Latin script follow the encoding defined in the  <p>The characters of the Latin script follow the encoding defined in the ISO
 ISO 8859-1 (ISO Latin-1) standard. The characters of the Greek script  8859-1 (ISO Latin-1) standard. The characters of the Greek script follow the
 follow the encoding defined by Adobe for its Symbol font (Adobe  encoding defined by Adobe for its Symbol font (Adobe FontSpecific).</p>
 FontSpecific).</p>  
   
 <p>Characters whose octal code is greater than 0200 are written in the form  <p>Characters whose octal code is greater than 0200 are written in the form
 of their octal code preceded by a backslash character (``\''). For example,  of their octal code preceded by a backslash character (``\''). For example,
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