When is "Last Edit" available to use?

This information applies to version(s): 4

Last edit is available: 

1. In Lightroom when the software is launched (except for Perspective Efex). To use it, you need to go to the "Edit" menu and click on "Apply last edit".
2. In Photoshop, last Nik Collection software is available via the filter menu and last edit options using the selective tool.
3. While using the standalone software.