A new useful feature for Google Docs has the potential to increase your productivity regarding text based documents.
You can now select separate text paragraphs, without selecting the entire text.
This means, for example, that you can select only lines 1, 5, 9 and 36, without selecting the text in-between.
To do this select the first paragraph in the usual way. Then, keep CTRL (Command for Mac) pressed, and select other paragraphs with your mouse.
Why is this si useful? Because you can apply formatting with just one click after selecting multiple paragraphs of text.
Otherwise, you would select-format, select-format and so on for every paragraph needed.