You can use text fields to include notes or any other freeform text in your project.
Text fields can be used in filters, for example: field:"exact text". Text fields and item titles will also be used if you filter for text without specifying a field.
Number fields can also be used in filters. You can use >, >=, <, <=, and .. range queries to filter by a number field. For example: field:5..15 or field:>=20. For more information, see Filtering projects.
Adding a text field
- In table view, in the rightmost field header, click .

 - Click New field.
 - At the top of the dropdown, type the name of your new field.
 - Select Text.
 - Click Save.
 
Adding a number field
- In table view, in the rightmost field header, click .

 - Click New field.
 - At the top of the dropdown, type the name of your new field.
 - Select Number.
 - Click Save.