A revision ID, a string that uniquely identifies one revision of its document.
Every time a document is saved (locally or on the server) its revision ID changes.
Remarks
RevIDs are mostly opaque, but the initial portion before the "-" is a generation number
that indicates how many times the document has been changed.
A revision ID, a string that uniquely identifies one revision of its document. Every time a document is saved (locally or on the server) its revision ID changes.