[blacksmith_tb]

I guess that suggests an over-optimization in favor of working on more of the same documents eventually - but I might not do that any time soon... I opened an app, edited a document in it. When I am done, unless I have other files open in that app, it seems like it might as well be completely closed, until I launch it again or open one of the document types associated with it? I guess some users may only work on a few kinds of files, and in a few apps, so they might benefit from slightly quicker load times; otherwise having a bunch of things running on the off chance I use one again seems like a waste of RAM.

[Tagbert]

…and in that case, you would close the app.

Conflating closing a document window with closing the app seems like a strange constraint.