# `TF005` Tags

Adding a tag to a requirements adds this requirement to the list of that tag.

:::{dropdown} Is a test for
:open: 
:icon: check-circle-fill
:color: primary

[`SF007` Index requirements by tags](/requirements/SF007)
:::

## Initial state
The expected state is the final state of
[`TF002` Generate a PDF](/tests/TF002)
## Procedure
### Step 1
Add tags to requirements: edit `spec.yaml` for it to become:

```console
$ cat spec.yaml
```
```yaml
kind: requirements
category: functional
requirements:
- id: S01
  short: Lorem ipsum
  long: The first requirement
  tags:
    - foo
    - bar
- id: S02
  long: The second requirement
  tags: [bar, baz]

```
### Step 2
Regenerate the PDF and verify the tags index is present and listing the right requirements
```console
$ typst compile specification.typ && open specification.pdf
```
### Step 3
In the `S01` section, click on the `bar` label to jump to the list of Bar

### Step 4
Verify both `S01` and `S02` are listed