Word formats things such as quotations, bulleted and numbered lists, and horizontal lines automatically. When you input at least three dashes, underscores, or equal signs in a paragraph and click "Enter," the letters are changed to a single, thick single, or double horizontal line, as appropriate. This makes it easier to align items in your document.
The horizontal line appears when you press the Enter key after entering three consecutive hyphens, minus signs, or asterisks into a paragraph. For example, if you enter ---- then press Enter, a single horizontal line will appear in the paragraph. If you enter *---* then press Enter, two horizontal lines will appear in the paragraph.
You can remove a single or multiple horizontal lines by selecting the text and pressing the Delete key. Deleting all horizontal lines from a section breaks that section into new, separate paragraphs.
The formatting mark button in Microsoft Word looks like this: P. The paragraph sign denotes where a paragraph is and can be useful in particular situations. There's also a potential that you'll wind up printing your documents with paragraph symbols all over them. This can be problematic if you're trying to read printed pages of text from a book, for example.
Whether you want it or not, Word creates space between paragraphs. There are no extra paragraph marks if you display paragraph markers. This is a feature of Word's style. When you hit the Enter key to start a new paragraph, Word raises the line spacing to indicate the transition from one paragraph to the next. This may not seem like a big deal, but if you're trying to write a book and merge multiple files together, this can be problematic.
The easiest way to avoid this problem is to go into your Paragraph Settings and reduce the Line Spacing value. You'll see that even though you've got a single line space in use now, it's set to a much lower number than the default. If you want less space between each line, use higher numbers here (but note that these will also affect header levels and other formatting details).
If you want to keep the line spacing at its current setting but stop Word from adding space between every line, there is an option for this as well. Go to Format > Paragraph Styles > Edit Paragraph Style and click the Advanced button.
Using the built-in Horizontal Line tool, place a line into a Word document.
Use three hyphens in a row on an otherwise blank line and then hit "Enter" to make a thin, solid line; three underscores instead will make a thicker solid line, while three equal signs will make a double line. These marks can be used to divide words or sentences.
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A paragraph is defined as any block of text that finishes when you press the Enter key. So, as long as you press the Enter key, a single letter, a word, a phrase, or a document full of sentences is a paragraph. The paragraph sign is used to indicate the end of a paragraph in a document. It can also be used before a quotation or excerpt to indicate the end of that portion of the document.
How to Insert Several Lines in a Word Document