Multi language support for RBP

[DanielHurtubise]

Hi guys,
is there any chance we could have a switch to specify the language to start Revit with

/FRA /DEU :)

This tool is... amazing

[moinnagani1]

Is there a way to keep a previously opened file open in Revit? I want to compile a list of files and then initiate a batch process that will open these files in multiple instances of Revit. Once a Revit file is opened, it should remain open and not close. Is this or something similar possible?