The very short format is useful for reminders of what is possible, flagging features that I'd skipped over when they first came out (iterating over multiple val

The very short format is useful for reminders of what is possible, flagging features that I'd skipped over when they first came out (iterating over multiple values at a time, i.e. a hash in a foreach loop). You need to go elsewhere to get the significance of new features to the language, such as "class" or subroutine signatures. It's the best format of reference I've seen for the times I'm asking myself what's the minimum version of Perl needed for this bit of code and what becomes available when ops upgrades the production server.