Readwise

# Readwise Reader Documentation > This document contains all documentation content from Readwise Reader, providing comprehensive information about features, guides, and frequently asked questions for the Reader app. This file includes 45 documentation pages. ## Action Tags ## What is an Action Tag? Action tags are highlight notes that use a specific syntax to perform actions on the associated highlight. All action tags begin with a `.` character, and their functionality effects how the highlights appear in Readwise. ## How can I create headings between my highlights? In Reader, headings are added to the Notebook view (`Shift + 1`) automatically when they’re detected within the document’s content. However, if you want to see those headings in Readwise as well, you’ll need to use an action tag. To do so, highlight the text that you want to appear as a heading, then add a note (`N`) with the text `.h1`. This will create a top-level heading with the text of the highlight. To create nested headings, you can use an `.h2` tag and so on. Note that you can start with lower level headings (e.g. `.h3`) and they’ll still appear in Readwise, but for the table of contents to appear on the left side of the page, you’ll need to start with at least one `.h1` tag. ## How can I combine two disparate pieces of text into a single highlight? Oftentimes, the most salient parts of a paragraph are the first and last sentence, which can be frustrating when the author includes a bunch of fluff in […truncated]