thanks for trying.

i don't know whether i am allowed to add anything here or whether it will just be rejected as the ticket is closed. anyway, thank you for the above comments which i will follow up on. i am using win 10 64 bit. i installed python quite a long time ago when doing a lynda.com python course. i did not know about not installing it to program files nor do i know why i have ended up with 32 bit python. i will try running the pip install from a c prompt started as admin and see whether that helps. i suppose running as admin might also solve with the installation problem too, though i appreciate that might not be what i am really supposed to do and it won't help the 32 bit problem!

i have looked at https://developer.blender.org/T52790 and at the documentation, and for me this is still a bug. i following a lynda.com blender rigging tutorial that uses v2.72 and i have done exactly what the instructor has done and his 001 numbers get removed and mine do not.

thank you for the suggestion which i have tried. the new Display Scale function does indeed seem to be identical to the old DPI parameter (i checked in 2.78). i only found this function this morning while studying a blender tutorial so i was not previously familiar with how the DPI parameter worked. btw, for me, it made no difference whether i selected Thin or Auto.

please consider bringing back the explicit ability to control DPI size as it can be very useful for those of use creating tutorials for Blender (making it easier for the student to see the text).