Motion uses Github Flavored Markdown for all of the description fields.

API users can test their code using a markdown to HTML converter, like showdown.

Currently, we use Prosemirror for our text editor, and it does not seem to play nicely with Github Flavored Markdown.

Specifically, creating a checkbox with - [ ] My checkbox or - [x] My checkbox does not work.

We are in the process of ripping out Prosemirror, and in a couple weeks this limitation should be solved. Until then, please use the following workaround.

Use the following raw HTML string in the description input to create a checkbox: <ul data-type="taskList"><li data-checked="false"><label contenteditable="false"><input type="checkbox"><span></span></label><div><p>YOUR SUBTASK ITEM HERE</p></div></li></ul>