TEI Lex-0

<content>
 <dataRef name="token"
  restriction="(-?[0-9]+(\.[0-9]+)?,-?[0-9]+(\.[0-9]+)?)"/>
</content>
    ⚓

teidata.point = token { pattern = "(-?[0-9]+(\.[0-9]+)?,-?[0-9]+(\.[0-9]+)?)" }⚓

<facsimile>
 <surface ulx="0" uly="0" lrx="400" lry="280">
  <zone points="220,100 300,210 170,250 123,234">
   <graphic url="handwriting.png"/>
  </zone>
 </surface>
</facsimile>

A point is defined by two numeric values, which should be expressed as decimal numbers. Neither number can end in a decimal point. E.g., both 0.0,84.2 and 0,84 are allowed, but 0.,84. is not.