Why do section headings display differently on different computers?

Question

A few months ago I reduced the font size for section-headings so that it would print better.  On my computer the sections headings now look very small compared to the rest of the text, but I've recently discovered that they display fine on my wife's computer.  Why would the same project display differently on different computers yet print fine?

Answer 1

A few months ago I reduced the font size for section-headings so that it would print better. 

How did you reduce the font size? 

Comments

I thought I'd changed it in custom.sty but I can't find that now for the project in question.  Is there another way to change font size etc of headings and other text in a project?

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Sorry I missed this. You can edit the usfm.sty file directly. That would make it only change on your machine since usfm.sty is not S/R'd to other people with your project. But I would expect changing usfm.sty to change the display of all projects on your machine.

Answer 2

It is my understanding that while the SIL fonts are designed to look and print the same there may be differences depending on screen resolution and zoom. So two different computers may "look" different.

Here is a brief response https://www.quora.com/What-is-the-difference-between-screen-and-print-font