U8g2lib has 18 constructors listed under the heading SSD1325 NHD_128X64.
How do I choose which one is appropriate?
Read the online documentation (Wiki on the github site) to work out what the different parts of the constructor mean and choose the one that suits you best.
Thanks marco_c, but I wouldn't know how to recognize a Wiki on a GitHub if it jumped up and bit me on the kneecap! :o
Are you referring to the information near the top of the U8g2setupcpp page? The sample code I have specifies U8G2_SSD1325_NHD_128X64_1_4W_SW_SPI(rotation, clock, data, cs, dc [, reset]), and this works. I know my OLED breakout uses a SSD1325 driver, so that is okay. All that remains to answer is, What does NHD stand for?
What does 'NHD' stand for?
As the link you provided is the u2g8 wiki at github, clearly you have been bitten.
According to the link it is simply the display name. This is defined by the library author, so it means something to him, so raising the question on the issues page of the github site that you already know how to get to is the easiest way to find out.
What's a GitHub?
Now, that might sound silly but I don't know what a GitHub is.
Github (https://github.com) is a hosting web site for source code. When you install the libraries through library manager, the IDE gets the code from here. Along with the source code is a way to report issues, provide software documentation and manage updates. The u8g2 github site is at GitHub - olikraus/u8g2: U8glib library for monochrome displays, version 2
Thanks again