Provides two views of your Mac’s update history: a simple text list, as before, and a structured version ideal for Macs with long histories.
Sierra
An arbitrary text headline which can be attached by some creators to documents.
Sometimes used by creators to give a description of the file in plain text.
A simple tool to list, in chronological order, all system and security updates. Runs on Sierra and High Sierra, and should be good on El Capitan too.
Gives the normal Finder name of the app which created or edited a file. Doesn’t give its path or signature, though.
Contains a binary date-timestamp for a downloaded file. Valuable for establishing the origins of files.
Now provides complete details of security updates, and simple tools to check for and install any pending updates.
Records the original URL from which a file was downloaded. Valuable for establishing the origins of files.
Contains arbitrary copyright information which remains ‘sticky’ and is not stripped when most metadata are removed from files.
Used to override the global mapping for any given file type, this reflects the Finder’s individual setting for a document.
The Eclectic Light Company 