Markdown is a way of formatting text and inserting images. It can be used within Habitica in all of the Chat features found in the Social tab, and also in the titles and notes of Tasks, Rewards, and Checklists. The images inserted with Markdown can be hosted on any web site. (Emoji can also be used to insert small images without using Markdown, but the selection of images is limited.) Note that in the mobile apps, the formatting produced by Markdown (as shown in the table below) may not display as expected.