> For the complete documentation index, see [llms.txt](https://glossary.prequilt.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://glossary.prequilt.com/pq-glossary/os.md).

# O's

## <mark style="color:blue;">One Patch Blocks</mark>

**One Patch Blocks** are quilt blocks that fill the entire [*cell block*](/pq-glossary/cs.md#cell-block) of the [*quilt grid*](/pq-glossary/qs.md#quilt-grid-also-digital-design-wall) and require no  piecing. They can easily be added to the digital design wall by using the One Patch Block tab nested in the Blocks Tab on the [*Quilt Editor*](/pq-glossary/qs.md#quilt-editor)'s [*left side control panel*](/pq-glossary/cs.md#greater-than-left-side-control-panel).&#x20;

<div><figure><img src="/files/k4GBT51Yuyb5OJoIW5bV" alt=""><figcaption><p><em>Quilt designed with one patch &#x26; HST blocks</em></p></figcaption></figure> <figure><img src="/files/aimQUbY84634DGp2LF0i" alt=""><figcaption><p><em>One patch blocks tab with blocks used</em></p></figcaption></figure></div>

## <mark style="color:blue;">Orphan Blocks</mark>

**Orphan blocks** are leftover or extra blocks that have not been used in a quilt. For a good use case for PreQuilt and your orphan blocks check out:

{% content-ref url="/spaces/PUFswdysHBJDPIJC9xe0/pages/HUSFMAaTBcrxPIIWjBx3" %}
[Orphan Block Quilts](https://help.prequilt.com/prequilt-101/starter-quilts/orphan-block-quilts)
{% endcontent-ref %}