Tags become handy when your information doesn't fit the hierarchical structure.
Using tags, you can group your notes by categories and mark them with special notes in order to organize your workflow.
The list of tags is right above the note name:
You can view the complete list of tags by clicking on the gray "Tags" label left to the tag list.
When you click right to the tags, you can edit them:
Please note that tags are saved automatically as you add or delete them, there is no need to click anything else.
If you click on any tag you see all notes from the current notebook with this tag.
You can also rename, delete and style any tag, it will be updated at all corresponding notes at once:
If you need to find a tag in all your notebooks, you can use search.