Alt + Clicking on open in new instance allow opening without extra arguments from command lines (tooltip shows when there are more than two, mostly interesting for dev and TD peoples)Copy Launch Command option in folder icon Alt menu when dev mode is enabled.Improved custom file history:

Custom file history improvements
Ctrl + Alt + Shit + OQuick opening of any addons preferences:
Single Addon Preferences button at the bottom of Alt menu (Alt + Click on folder icon). Popup a search fied to show a target addon preferences.1, disabled ones with 0 for fast filtering.More path related actions in library context menu
blender file mode of Outlineropen containing folder and copy pathopen in new instance in case of library blend fileLink checker (only available with Developer mode enabled in preferences):
Alt panel on folder icon or in the header of the Blend file outliner modename_001 -> name_002)relocate, it just rewrites the filepath, blend (as could be possible before Relocate was added), file needs to be saved and reopened for the library change to take effect. warning: A bad use of this can break links in your file, you have to know what you're doing !Error when displaying relative file path's name and stem in "copy alternative path" operator
Actions available using modifier keys when clicking on corner Folder icon:
Ctrl + Click : Copy Blend pathShift + Click : Open Side BlendAlt + Click : Alternative actionsCltr + Alt + Click : popup copy formatted path to BlendNow ask for confirmation when current blend is not saved and user try to open from side blend or from new File history
Alt + Click on folder iconFile History (enhanced "Open recent") with the following features:
Alt + click on it for alternative formatting choice)Copy formatted path to Blend (same as Ctrl+Alt+Click on corner folder icon)
open/copy app related paths:
In open side blend popup, alternative path popup, or file history popup, when there is a Copy icon related to a path, Alt + Click on it call a sub-popup to chose alternative path formats with quote style choice.
List permissions in manifest file
permissions = ["files", "clipboard"]Fix problem with preferences