Is there a difference between setting a
Cell or a
Group of cells to be an
Initialization Cell versus an
Initialization Group versus doing both?
InitializationGroup vs group of
If you create a new cell in an
InitializationGroup it will automatically become an
For the group of
InitializationCells you will get a default one, which you can turn into another
InitializationCell or not.
A set of
InitializationCells vs one
I can't find any difference in terms of initialization behavior. I'd say it's a matter of taste, for more than one cell you can use some styles to comment/group them for readability.
There are also some subtle differences when it comes to aborting (stop notebook evaluation when Assert fails etc. But nothing strictly related to initialization.