I defined more than on fileviewer. Changing files when VIEW is active fileviewer is rest to first in list.
Example:
fileviewer *.jpg imagepreviewer %c, mediainfo %c
So inside a directory with jpg-files activtaing preview will use imagepreviewer as default. After changing previewer with "a" mediainfo ist used as previewer. Changing to next jpg-file will reset fileviewer to imagepreviewer (not mediainfo anymore) and so for every jpg-file "a" is needed to switch from imagepreviewer to mediainfo.
Is there any way to "remember" last used fileviewer?