<surface>

<surface> defines a written surface in terms of a rectangular coordinate space, optionally grouping one or more graphic representations of that space, and rectangular zones of interest within it.
Moduletranscr — 11 Representation of Primary Sources
Attributes att.coordinated (@ulx, @uly, @lrx, @lry) att.declaring (@decls)
startpoints to an element which encodes the starting position of the text corresponding to the inscribed part of the surface.
Status Optional
Datatype 

<rng:ref name="data.pointer"/>
data.pointer
Used by
facsimile
May contain
core: binaryObject desc gloss graphic
figures: formula
tagdocs: altIdent equiv
transcr: zone
Declaration

<rng:element name="surface">
<rng:ref name="att.global.attributes"/>
<rng:ref name="att.coordinated.attributes"/>
<rng:ref name="att.declaring.attributes"/>
<rng:optional>
 <rng:attribute name="start">
  <rng:ref name="data.pointer"/>
 </rng:attribute>
</rng:optional>
<rng:group>
 <rng:zeroOrMore>
  <rng:ref name="model.glossLike"/>
 </rng:zeroOrMore>
 <rng:zeroOrMore>
  <rng:ref name="model.graphicLike"/>
 </rng:zeroOrMore>
 <rng:zeroOrMore>
  <rng:ref name="zone"/>
 </rng:zeroOrMore>
</rng:group>
</rng:element>
element surface
{
   att.global.attributes,
   att.coordinated.attributes,
   att.declaring.attributes,
   attribute start { data.pointer }?,
   ( model.glossLike*, model.graphicLike*, zone* )
}
Example
<facsimile>
 <surface
   ulx="0"
   uly="0"
   lrx="200"
   lry="300">
  <graphic url="Bovelles-49r.png"/>
 </surface>
</facsimile>
Note
The surface element represents a rectangular area of any physical surface forming part of the source material. This may be a sheet of paper, one face of a monument, a billboard, a papyrus scroll, or indeed any 2-dimensional surface.
The coordinate space defined by this element may be thought of as a grid lrx - ulx units wide and uly - lry units high. This grid is superimposed on the whole of any image directly contained by the surface element. The coordinate values used by every zone element contained by this surface are to be understood with reference to the same grid.