Hitting enter, without skipping to a new paragraph???

WordPress (like a lot of other software) by default appears to automatically start a new paragraph when the enter key is pressed and, for the most part that is a convenient feature to have.

That being said, I need to enter some content and have it appear on consecutive lines withoutany lines separating the text. How can I override the WP default (only in a few places) and allow my text to appear in non-paragraph form?