This is a screenshot of the instructions displayed for the symbol-digit test. It was followed by the practise screen illustrated in Resource 5022.

This resource can be downloaded or viewed using the link: symdig_inst.png

If you have wget available (typically on linux systems), then you can also obtain a copy using the command

 wget  -nd  biobank.ctsu.ox.ac.uk/ukb/ukb/images/symdig_inst.png