On the Actions menu, the Delete 
command deletes the selected files and folders from one or both sides of the comparison.
If a folder is selected, its entire contents are deleted, regardless of file filters or display filters in effect. If an open folder is selected and any of its children are selected as well, then the folder's selection is ignored and only the selected children will be deleted.
Enable the Use recycle bin if possible option to move files and folders stored on a local drive to the recycle bin instead of being completely removed. This option is ignored for deletions from network drives, FTP sites and within zip files.