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Please display the cursor position in inches/cm on the status bar.

This would tell me where certain characters will land on (or off!) the printed page.

That would be a handy albeit not super-important feature.
Of course it would be best if it took into account the margins for the current document type.

Useful to anyone else?

To me this is a typical word-processing feature, not a text-editor feature.

Although I occasionally print a text file, the print is not primary purpose of editing in textpad - I usually edit code with textpad - the main purpose of the code is to be run (if it is program language code) or to be displayed (if it is HTML, SVG or similar code), not to be printed.
Therefore printing positions are of very, very, very low priority to me.

I might be missing something here, not for the first time btw, but...
File->Print Preview?

I have an interesting job... I convert old character mode UI programs into Windows programs. Part of this is reports... The particular language I'm converting from uses "Images" to determine field positioning.
For instance, a report that has a number, a date, a number and then a text field looks like this:

___.__ __/__/__ ___.__ ______

In the target language, I have to use "Write" commands that take the horizontal position in inches.

Write Something XPos

So... that's why this would be useful. I don't know of any word processing app (MSWord doesn't, to my knowledge) that provides this functionality.

Like I said... not particularly important to a great many people.

Could you use something like this? Tucows gives the freeware one 5 out of 5, I have not used it.
Freeware
Shareware
Just one seach, perhaps there are others. HTH