The Enter key creates a new Paragraph. On the web, Paragraphs almost always are double spaced (have a bottom margin, that is, white space between paragraphs) to improve readability. The reason that style is so common is because indentation of the first line (like in newspapers) is almost never used and not having either styling leads to a difficult-to-read monolithic slab of text with no visual separation between paragraphs. It's pretty much standard practice for Enter to create a Paragraph. There isn't a feature to change it per-user, I'm afraid. The only thing I could do is change Paragraph styling site-wide to remove that bottom margin for all paragraphs, which I'm reluctant to do for two reasons: I'm not sure that everyone wants it that way, like I said Enter = Paragraph is pretty standardMore importantly, every paragraph in every thread would lose its bottom margin, and as a result we'd have no spacing between paragraphs, just that monolithic slab of text in every post.Anyway, in instances where you don't want a new paragraph, what you're looking for is a "line break". Most word processors, including Word and this site's editor have a shortcut to create a line break. Here (and in many programs) it's Shift+Enter. Sometimes it's Ctrl+Enter. If your problem is that you have changed the default behavior in Word and other applications, and when you get here you're creating double paragraphs by mistake... All I can say is sorry for the frustration