View source for Unitless CSS Lengths

Issues:

From www-svg@w3.org:
http://lists.w3.org/Archives/Public/www-svg/2005Feb/0099
http://lists.w3.org/Archives/Public/www-svg/2005May/0218
http://lists.w3.org/Archives/Public/www-svg/2005Sep/0032
http://lists.w3.org/Archives/Public/www-svg/2005Sep/0033
http://lists.w3.org/Archives/Public/www-svg/2005Sep/0034
http://lists.w3.org/Archives/Public/www-svg/2005Sep/0035
http://lists.w3.org/Archives/Public/www-svg/2005Nov/0090

From www-style@w3.org:
http://lists.w3.org/Archives/Public/www-style/2005Jul/0226 (see last sentence)
http://lists.w3.org/Archives/Public/www-style/2005Jul/0289
http://lists.w3.org/Archives/Public/www-style/2005Jul/0292
http://lists.w3.org/Archives/Public/www-style/2005Jul/0293
http://lists.w3.org/Archives/Public/www-style/2005Oct/0154

Lengths must have units in CSS; without units some properties in CSS
are ambiguous (e.g. 'font', 'line-height'). Unitless lengths are in
fact not catered for by the CSS core syntax; implementations are
unable to implement both SVG and CSS in the same cascade (as required
by multi-namespace documents).

Properties that may be given a <length> value in CSS 2 are:

<table border="1" cellpadding="2px;" cellspacing="0" rules="all" style="margin:5px;">
  <tr>
    <td>[http://www.w3.org/TR/CSS2/colors.html#propdef-background-position background-position]</td>
    <td>[ [<percentage> | <length> ]{1,2} | [ [top | center | bottom] || [left | center | right] ] ] | inherit</td>
  </tr>
  <tr>
    <td>[http://www.w3.org/TR/CSS2/tables.html#propdef-border-spacing border-spacing]</td>
    <td><length> <length>? | inherit</td>
  </tr>
  <tr>
    <td>[http://www.w3.org/TR/CSS2/visuren.html#propdef-bottom bottom]</td>
    <td><length> | <percentage> | auto | inherit</td>
  </tr>
  <tr>
    <td>[http://www.w3.org/TR/CSS2/fonts.html#propdef-font font]</td>
    <td>[ [ 'font-style' || 'font-variant' || 'font-weight' ]? 'font-size' [ / 'line-height' ]? 'font-family' ] | caption | icon | menu | message-box | small-caption | status-bar | inherit</td>
  </tr>
  <tr>
    <td>[http://www.w3.org/TR/CSS2/fonts.html#propdef-font-size font-size]</td>
    <td><absolute-size> | <relative-size> | <length> | <percentage> | inherit</td>
  </tr>
  <tr>
    <td>[http://www.w3.org/TR/CSS2/visudet.html#propdef-height height]</td>
    <td><length> | <percentage> | auto | inherit</td>
  </tr>
  <tr>
    <td>[http://www.w3.org/TR/CSS2/visuren.html#propdef-left left]</td>
    <td><length> | <percentage> | auto | inherit</td>
  </tr>
  <tr>
    <td>[http://www.w3.org/TR/CSS2/text.html#propdef-letter-spacing letter-spacing]</td>
    <td>normal | <length> | inherit</td>
  </tr>
  <tr>
    <td>[http://www.w3.org/TR/CSS2/visudet.html#propdef-line-height line-height]</td>
    <td>normal | <number> | <length> | <percentage> | inherit</td>
  </tr>
  <tr>
    <td>[http://www.w3.org/TR/CSS2/generate.html#propdef-marker-offset marker-offset]</td>
    <td><length> | auto | inherit</td>
  </tr>
  <tr>
    <td>[http://www.w3.org/TR/CSS2/visudet.html#propdef-max-height max-height]</td>
    <td><length> | <percentage> | none | inherit</td>
  </tr>
  <tr>
    <td>[http://www.w3.org/TR/CSS2/visudet.html#propdef-max-width max-width]</td>
    <td><length> | <percentage> | none | inherit</td>
  </tr>
  <tr>
    <td>[http://www.w3.org/TR/CSS2/visudet.html#propdef-min-height min-height]</td>
    <td><length> | <percentage> | inherit</td>
  </tr>
  <tr>
    <td>[http://www.w3.org/TR/CSS2/visudet.html#propdef-min-width min-width]</td>
    <td><length> | <percentage> | inherit</td>
  </tr>
  <tr>
    <td>[http://www.w3.org/TR/CSS2/visuren.html#propdef-right right]</td>
    <td><length> | <percentage> | auto | inherit</td>
  </tr>
  <tr>
    <td>[http://www.w3.org/TR/CSS2/page.html#propdef-size size]</td>
    <td><length>{1,2} | auto | portrait | landscape | inherit</td>
  </tr>
  <tr>
    <td>[http://www.w3.org/TR/CSS2/text.html#propdef-text-indent text-indent]</td>
    <td><length> | <percentage> | inherit</td>
  </tr>
  <tr>
    <td>[http://www.w3.org/TR/CSS2/text.html#propdef-text-shadow text-shadow]</td>
    <td>none | [<color> || <length> <length> <length>? ,]* [<color> || <length> <length> <length>?] | inherit</td>
  </tr>
  <tr>
    <td>[http://www.w3.org/TR/CSS2/visuren.html#propdef-top top]</td>
    <td><length> | <percentage> | auto | inherit</td>
  </tr>
  <tr>
    <td>[http://www.w3.org/TR/CSS2/visudet.html#propdef-vertical-align vertical-align]</td>
    <td>baseline | sub | super | top | text-top | middle | bottom | text-bottom | <percentage> | <length> | inherit</td>
  </tr>
  <tr>
    <td>[http://www.w3.org/TR/CSS2/visudet.html#propdef-width width]</td>
    <td><length> | <percentage> | auto | inherit</td>
  </tr>
  <tr>
    <td>[http://www.w3.org/TR/CSS2/text.html#propdef-word-spacing word-spacing]</td>
    <td>normal | <length> | inherit</td>
  </tr>
</table>