Rich Text Editor

The Rich Text Editor is a tool that allows you to add or edit content, images, links, and other components on the page without having to know any code. It displays the content and any formatting as it would display in the browser. The rich text editor toolbar functions resemble that of a word processor, with limitations.

NOTE: Sitecore has a 20 minute session timeout. This means if you are not working in Sitecore for 20 minutes straight, your session will timeout and Sitecore will automatically log you out. Any changes you made that were NOT saved, will be lost.

When working in the Rich Text Editor (RTE), the Sitecore session timeout continues it's countdown because Sitecore does not recognize your activity. To ensure your content is saved and you do not get logged out after 20 minutes when working in the RTE, select the Accept button at the bottom of the screen (exiting you out of the RTE) and then select the Save Save icon icon.

Read up on Writing for the Web - best practices and standards on writing and formatting content, images, tables, etc.
Review the Sitecore Style guide for better understanding o
More advanced users that know HTML can view the content in Code View by selecting the HTML tab at the bottom of the editor.

Rich Text Editor