Tags
The number of tags of list and tasks is unlimited. It is not possible to change order in the tag menu.
In order to use tags, you need premium 
.
Tip! If you want to create a weekly report, set a tag. Then email the list to yourself, make the final editing and send the report to your receivers. Done!
Example
The tag #Waiting for
The tag "Waiting for" is excellent to use to collect all tasks where you are dependent on input from someone else to finalize.
Example
Tag projects
If you want to create an overview of the different projects you work with while maintaining only one to-do list, tags enables you to get the full overview.