Question: I'm new to jedit, and I haven't yet found out how to open a new window. For example, I want to be editing one set of files in one space on my Mac, and edit a different set of files in another. Does anyone know how to open a new instance/window of jedit to make this possible?

Thanks

Answer: 
You should set **Buffer Sets** scope to "**View**"

See also: [Buffer Sets](http://www.jedit.org/users-guide/buffersets.html)
I wish there was an answer for this, since I'm constantly trying to open new instances of JEdit (despite being a daily user for several years now). But, as far as I can tell, you can't.

I have to assume this is another example of a good project getting over-architected.

Instead of allowing separate instances which logically associate different buffer behaviors using the built-in OS mnemonics, the JEdit crew have decided to create their own UI concepts. What OS lacks the concept of software instances and a task bar? Was it necessary to force a single-instance mode, and then re-create basic OS UI functionality in an obscure manner?

A hint for budding developers out there: if you're creating new terminology to handle UI concepts in your application, you're probably doing it wrong.