I cannot select multiple files that are present on the left window pane under (Patient/Study/Serie).
I usually have to visualize many files at the same time so I select all of them from the hard disk using "Browser" and then use the action "Load".
After working with them when I want to "remove" these files, I have to remove the files individually since I can't select all of them together. I want to remove them to free up the RAM space and load other images for visualization.