---
title: "Glossary"
canonical: "https://docs.pbs.org/space/AVAIL/5636939/Glossary"
format: markdown
---
| **Term** | **Definition** |
| --- | --- |
| AIM | Avail / Interstitial Manager. The tool that makes it possible to insert an interstitial into an avail on your station's linear stream. |
| Avail | The 65-second time period in the linear stream at which a station can traffick its own interstitial. Also known as a time slot or slot. |
| Campaign | A bundle of pods. [Learn more](https://pbs-docs.atlassian.net/wiki/spaces/AVAIL/pages/5637269) |
| DMA | Designated Market Area. A<span style="color: #222222"> region where the </span>population<span style="color: #222222"> can receive the same (or similar) media offerings, such as television broadcasts.</span> |
| Dropbox | A file hosting service that offers cloud storage, file synchronization, personal cloud, and client software. If you want to use Dropbox with AIM, you must have your own Dropbox account. [Learn how to create an account](https://www.dropbox.com/find-your-plan) |
| Element | A building block of a pod. A pod is comprised of multiple elements. [Learn more about pods](https://pbs-docs.atlassian.net/wiki/spaces/AVAIL/pages/5637193) |
| MSO | Multiple System Operator. O<span style="color: #222222">perator of multiple </span>cable<span style="color: #222222"> or </span>direct-broadcast satellite<span style="color: #222222"> television systems.</span> |
| PBS Account | A unique PBS profile that allows a user to maintain a singular identity across all PBS ecosystems. |
| Pod | The 65-second video, and its associated metadata, assigned to a slot. [Learn more](https://pbs-docs.atlassian.net/wiki/spaces/AVAIL/pages/5637193) |
| Rule | The mechanism by which pods are assigned to slots/avails. [Learn more](https://pbs-docs.atlassian.net/wiki/spaces/AVAIL/pages/5636827) |
| Schedule | The various views showing all pods and campaigns assigned to the slots/avails. [Learn more](https://pbs-docs.atlassian.net/wiki/spaces/AVAIL/pages/5637175) |
| Slot | Interchangeable with avail. It is the 65-second section of the linear stream when a station can insert its own interstitial content. |
| Spot | <span style="color: #172b4d">Individual video elements that can be of varying lengths and used to create your 65-second </span>[pod](https://pbs-docs.atlassian.net/wiki/spaces/AVAIL/pages/5637193). Spots are interchangeable with element. [Learn more](https://pbs-docs.atlassian.net/wiki/spaces/AVAIL/pages/5637219) |