File Scope

A signature with file scope captures the state of all the models in the file plus file-level information (defined below). Thus, a file signature becomes invalidated by any change to the content of any model or to file-level information.

File-level information included in the signature

Editable summary properties including title, subject, category, keywords, comments, author, company, category, manager, and application
Shared status of file (set for Design History file sharing feature)
File format (V8, V7, DWG)

File-level information excluded from the signature

File path and name
File size
"Opens With" (application association)
Attributes (read only, hidden)
Volatile "Summary Properties" including revision number, date last saved, last saved by, edit time, security, modified time, accessed time
Thumbnail
"Security Properties"
"Custom Properties"
MicroStation "Session" data, including last user and computer to access the file
Licenses defined by File Protection
Design History
All "Custom Properties"
All nested property sets

Note: A file signature excludes streams and storage added to the file by applications.

Note: All summary properties not mentioned here are excluded from the signature.

Note: Design History is excluded from the signature so that history may be used to manage signatures.