---
title: Load Options Keys
framework: medialibrary
role: collectionGroup
role_heading: API Collection
path: medialibrary/load-options-keys
---

# Load Options Keys

Keys used to specify the options dictionary argument to init(options:).

## Topics

### Constants

- [MLMediaLoadSourceTypesKey](medialibrary/mlmedialoadsourcetypeskey.md)
- [MLMediaLoadIncludeSourcesKey](medialibrary/mlmedialoadincludesourceskey.md)
- [MLMediaLoadExcludeSourcesKey](medialibrary/mlmedialoadexcludesourceskey.md)
- [MLMediaLoadFoldersKey](medialibrary/mlmedialoadfolderskey.md)
- [MLMediaLoadAppFoldersKey](medialibrary/mlmedialoadappfolderskey.md)

## See Also

### Constants

- [Media Source Identifiers](medialibrary/media-source-identifiers.md)
- [Non-App-Specific Media Source Identifiers](medialibrary/non-app-specific-media-source-identifiers.md)
- [Well-Known Folder Identifiers](medialibrary/well-known-folder-identifiers.md)