Confluence is an internal wiki / knowledge base system for companies. It is built by Atlassian.
Below is a snippet you can copy-paste into the browser’s developer console to show the HTML of the page in a text box. This is useful to convert to Markdown, edit, convert back to HTML and update the page.
var ta = document.createElement('textarea');ta.style.width='100%';ta.style.height='90%';ta.value=tinyMCE.activeEditor.getContent();document.body.appendChild(ta);var btn = document.createElement('button');btn.innerText='Write';document.body.appendChild(btn);btn.onclick=()=>{tinyMCE.activeEditor.setContent(ta.value); ta.remove(); btn.remove();};