How do I export a finished piece as epub? by reyes_mx

Sorry if this is covered somewhere obvious, I've looked through the help pages and can't find it. I have a short story collection that I'd like to export as an epub to send to a few beta readers. I can see the export option but I'm not sure what the current state of epub support is. Does it preserve all the formatting? I have some italics and a few section breaks that matter structurally. Also, is there a way to collect multiple works into a single export? Or do I have to export them one at a time and combine manually? Thank you in advance. I'm very new here, been on the platform maybe a week.