How do I integrate KaTeX into Qualtrics?

Add this to the survey header. Make sure you click on <> to put it in source mode first.

Thanks TomG. I can see how you would do this for individual questions via the rich content editor in each individual element of the survey. Is there a way to do it for the entire survey globally?

https://community.qualtrics.com/XMcommunity/discussion/comment/50761#Comment_50761Put it in the survey header. Look & Feel -> General -> Header (edit). Then click the <> icon.

Thanks. I put the info. you posted here in the header. I also have the style sheet in Look & Feel -> Style -> External CSS. Is this required?
Is there a way to enable the JavaScript globally as well or does this need to be done in each question individually? i.e. this piece...
Qualtrics.SurveyEngine.addOnload(function() {
jQuery(".katex").each(function() {
katex.render(this.innerHTML, this, { throwOnError: false });
});
});
Qualtrics.SurveyEngine.addOnReady(function()
{
/*Place your JavaScript here to run when the page is fully displayed*/
});
Qualtrics.SurveyEngine.addOnUnload(function()
{
/*Place your JavaScript here to run when the page is unloaded*/
});

https://community.qualtrics.com/XMcommunity/discussion/comment/50784#Comment_50784You don't need external css because you already have a link to the katex stylesheet in the header.
Yes, you can make the script global, by putting it in the header inside a