If you want to show line numbers in a Google Docs document, then you can do it using the Line Numbers for Google Docs Chrome extension.

How to add a dropdown in Google Docs Dropdown menus can be added to a Google Docs document with two clicks. Place your text cursor wherever you'd like the dropdown to appear.

You can double space in Google Docs using the "Line spacing" menu. The Line spacing menu lets you add double spacing, single spacing, and a variety of other styles. The Google Docs mobile app lets ...