When exporting a PDF from georeferenced OCAD maps, a Geospatial PDF (WGS84) according to ISO32000 is created automatically.
The Geospatial PDF can be loaded e.g. on a mobile phone in the app Avenza Maps as a map or it is possible to measure distances and request coordinates in Acrobat Reader.

In exporting Georeferenced PDF files. I can’t find the option in the Export list to do this?
The PDF is automatically exported as Georeferenced PDF is the map is georeferenced.
OK, I understand you cannot export in PDF while in Draft mode.