It is part of a document. Stores content of singular document section. It has different types as it can store: html content or files (attachments). Attachments are stored using IDs (generated during upload)
Section title which comes from a template
Section HTML content. Not all tags can be used. Unnecessary tags
Order of section in the document. Numbering starts from 1
Document section type. Determines how actual content looks like. If it is attachment, attachments filed should be filled, otherwise content
The ID of the object.
Attachments (IDs of Document attachments)