The Confluence editor is what you'll use to create and edit Confluence pages, blog posts, and comments. You can enter content as you would in a Word document, apply formatting, and embed other content and files on the page.
Note: To edit a page, you need the 'Add Pages' permission for the space.
This guide includes a link for the editor functionality in Confluence
Step-by-step guide
Blog post with instructions from Atlassian: The Editor
Draw IO addon for Confluence information:
https://drawio-app.com/blog/getting-started-with-draw-io-for-confluence/
Draw.io addon addtional information: Draw.io Tutorial
Sub-pages for How-to use Editor in Confluence
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Overview
Content Tools