Total Sleep is format in Daily Notes as 6:35, h:mm. The Graphing helpers will parse this by splitting on : and then turning the minutes into a decimal fraction for easier graphing. So 6:30 becomes 6.5 on the graph.
The efficiency number (and all the sleep stats) come from Autosleep the iOS app I use to track my sleep (Apple Watch as the sensor).
Objective is the same as Value Goal and Outcome is the same as Goal Outcome.
The numbers that are used as the default new note name for buttons are the yyyymmddHHMMSS, so the exact second it was created, this was an easy zettlekasten-esk unique identifier to use. The date format used for the New Note Buttons can be customized using an argument, see the New Week/New Day buttons as an example.
For Things in the Pipelines vaults (except Action Items) I do change it (so for Projects, Outcomes, Objectives) and other vaults where it makes sense like People. I use alias[0] for Action Items since I thought there are so many Actions and some have names not great for a file system or the same names as others, so a unique identifier is easier. I would like better support for using the Notes H1 as the alias by default, though, so I don’t have to explicitly fill in alias and H1 with the same info.