Policy
Copyright and Permissions
Sources, permissions, and download boundaries.
Sources and permissions
Each published item retains source and permission information in its metadata. The site publishes only text, images, audio, video, resources, or index information confirmed for public display.
Use boundary
Unless a content page explicitly provides a file and marks it for public download, it must not be assumed to be available for copying, republication, or other use. Restricted, unapproved, and index-only material is not offered as a public download.
If you believe a site item raises a rights or permission issue, use the site's published contact channel and provide the specific page and basis. The item will be reviewed according to the facts while it is being checked.