Data Type: Boolean

Default: false

If set to true, the template will be hidden from the sidebar.

Technically, it's still available via a direct URL if signed in, but that's in case you need to access it without showing it to your users.

Useful cases for this feature have been when a template should only exist as an association. For example, say you have an Invoice template that has a pdf_upload field with an element type, which is associated to the Invoice:PDF template. You might not want to let editors upload PDF invoices directly, but only through an invoice. In that case you would want to hide the Invoice:PDF template from the sidebar.