How to Keep a Word on a Line in MS Word. You can insert a line in a Word document using the underscore key, but if you attempt to type over the line, it either splits into two or disappears ...

A non-breakable space is a special character to avoid automatic line breaking between two words when they meet at the end of the line. Thus, if two words are separated by a non-breakable space, they ...

Microsoft Word automatically wraps from the end of the current line to the beginning of the next as you type. If you insert or delete text, everything automatically adjusts to accommodate the change.

There's not one, but two easy ways to insert a horizontal line into a Word document.