[GeoffR]

The unpatched firmware allows the page refresh interval to be set from 1 to 6 pages. It is also possible to edit the numPartialUpdatePageTurns entry in the [Reading] section of the device's configuration file to change the value to something larger than 6.

The `Custom page refresh options` patch allows the Reading Settings menu itself to be changed, so you can select from a custom set of values without the need to edit the configuration file. There are two patch alternatives: an arithmetic progression (default 1,2,3,4,5,6,7,8,9,10,11,12); or a geometric progression (default 1,2,4,8,16,32,64).

The screenshots attached (Glo, 3.15.0) show the first page of the Reading Settings menu, with the Refresh menu popup activated. From left to right:
1. Unpatched.
2. Patched, alternative 1 (default).
3. Patched, alternative 2.