When editing product descriptions, collection descriptions, page content or blog post content, you sometimes may find it helpful to view the raw HTML code for the page.
Additionally, if you're looking to add in any code into these pages (third-party app widget, column framework code etc.) you'll need to switch to code view in order to add it properly!
Step 1: From the Shopify Admin, navigate to your page/product/collection/blog post.
Step 2: In the upper right corner of the rich text editor is an icon that looks like this <>.
Clicking this <> button once will change to code view. You can click it again, while in code view, to return to the visual editor view.