Argument:
TABCLOSEDUPLICATES /O
Possible values:
(no value) Close any duplicate file tabs, leaving only original
Example: Go TABCLOSEDUPLICATES
left Close duplicate folder tabs in the left (or top) file display, irrespective of whether it is the source or not.
right Close duplicate folder tabs in the right (or bottom) file display, irrespective of whether it is the source or not.
dest Close duplicate folder tabs in the destination file display
existinglister Close duplicate folder tabs in current lister
alllisters Close duplicate folder tabs in all listers