I have worked out to annotate and permanently save a tif file in colour, but I can’t see how to do this for a black-and-white file. Is this technically possible, and if so can you offer any guidance on how to do this, please?
You can use:
Tools | Convert | To 24 bit
or
Settings | User settings | Saving tab
Color depth
Use default color depth = ON
Choose – 24 bit color