I can’t remember if the hex viewer back then had these options. Don’t even recall what software that was. :-)
The one that I used during my Windows 95 days was “Hex Workshop”. It had similar features, just not as promimently displayed. It shows them down there in the statusline as “Value”:
https://movq.de/v/a24558f83f/s.png
Newer versions can probably do more, haven’t checked. 😅 (Assuming this program still exists.)
Apart from selecting text to copy into the clipboard. But that probably has the potential for trouble and interference with button clicks, etc.
Yeah, that’s a big problem: Once you activate mouse mode in the terminal, the terminal loses the ability to select text. 😞 You’d either have to emulate that in the program itself (like Vim does) or give the user an easy way to turn mouse support on/off during runtime.
How did the startup times develop?
They’re pretty stable at around 230 ms on my old NUC. It’s just fast enough so that it doesn’t annoy me.
Slow progress: My hex editor now has an info panel that shows what’s under the cursor. https://movq.de/v/f9586ec65c/s.png