Matrices practise screen. Version shown is from 2021 implementation.

This resource can be downloaded or viewed using the link: hm61_PM_PRACTICE1.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/hm61_PM_PRACTICE1.png