A document is an electronic file, such as a MarkView document, invoice, or receipt. A document can also be a non-MarkView document, such as a Microsoft Word file, graphic files, and a digital audio files.

The document type specifies the category to which a document belongs and the type of metadata to associate with a document.

MarkView document types fall into two categories, default document type (file), and non-default document types (forms). For example, the human resources department might store personnel records in Document Library along with forms for medical insurance, retirement information, and tax information.