title: Autodesk forge - markup extension - create new EditMode tool
body: <p>This is very similar to the question posted <a href="https://stackoverflow.com/questions/60871333/how-to-create-new-markup-tool-in-markups-core-extension">here</a> but nothing useful was mentioned.</p>
  <p>I'm trying to look for documentation on how to create a new EditMode tool for the markup extension. Documentation is very scarce and I can't find the source code for markup extensions. The only thing I can find is <a href="https://autodesk-forge.gitee.io/viewer-docs/tutorial-feature_markup.html" rel="nofollow noreferrer">here</a>.</p>
  <p>I'm trying to decipher this file: <a href="https://developer.api.autodesk.com/modelderivative/v2/viewers/7.*/extensions/Markup/Markup.js" rel="nofollow noreferrer">https://developer.api.autodesk.com/modelderivative/v2/viewers/7.*/extensions/Markup/Markup.js</a> but it has a lot of webpack references and is hard to read.</p>
  <p>Has anyone managed to create a custom EditMode tool?</p>
  <h2>Edit</h2>
  <p>A member of my team has managed to find the source for the markup extension:</p>
  <p><a href="https://autodeskviewer.com/viewers/latest/docs/extensions_Markup_core_Markup.js.html" rel="nofollow noreferrer">https://autodeskviewer.com/viewers/latest/docs/extensions_Markup_core_Markup.js.html</a></p>