60:15-3-7. File formats for electronic recording 
(a)    Electronic recordings may be converted by the county clerk to and preserved as a Tagged Image File Format (TIFF) or Portable Document Format (PDF) files along with their associated metadata.
(b)    Model 3 submissions shall be converted to TIFF or PDF until the viability of preserving these electronic recordings in their native format, such as Extensible Markup Language (XML) or Extensible HyperText Markup Language (XHTML) has been demonstrated.
[Source: Added at 27 Ok Reg 1369, eff 6-11-10]