# Frequently Asked Questions <details><summary>Allowing dangerous HTML tags</summary> Sometimes it is useful to allow dangerous HTML tags to add interactivity to your notebook. One of the example is to use details/summary as a way to expand/collaps your todo-list. * How to enable: * Go to **Preferences** → **Interface** → **Sanitization** → **Allow dangerous html tags** * Example note: Multiple todo-list * Create new notes * Paste the below code, and you'll see that you can expand/collaps the todo-list, and you can have multiple todo-list in your note. ```html <details><summary>What I want to do</summary> - [x] Create an awesome feature X - [ ] Do my homework </details> ``` </details> ## Other questions You can ask [here][ISSUES] [ISSUES]: https://github.com/BoostIO/Boostnote/issues