In "Compare Current File with Previous File", what does "Previous" mean? Does that mean I first click a file, then click a second, and the first I clicked becomes the "previous". Or does it mean the file that appears in the list above the selection?
It's compared with the previously selected file
From Help
Quote
Compare (Submenu)
Compare Current File with Previous File
Allows you to determine whether the currently selected file is same or different from the previously selected file. The files need not be in same folder. A file is "selected" once it is displayed on Info Panel and Status Bar.
Logic & Remarks: See next paragraph.
Shortcut: Ctrl+Kmore
Compare Current File with File in Clipboard
Sort of a "Quick Compare" that allows you to check whether the currently selected file is same or different from the file currently on clipboard.
Steps
(1) Copy one file to the clipboard. Normal file copy (Ctrl+C), or copy of file name (Ctrl+P), both works. Copying of the file's contents will not work.
(2) Select another file in the file list.
(3) Now these two files can be compared using the Compare ... command.
Logic
First the file sizes are compared. If they are identical, the contents themselves are compared. The result is simply a "same" or "different" without any further information. If you need more details use a specialized comparison application (which can easily be automated from XY using UDCs or Scripting).
Remarks
For comparisons of files larger 1 MB you get a progress indication and a break chance by ESC.
Shortcut: Ctrl+Shift+K
Compare Current File on Both Panes
Checks whether the currently focused file is same or different from the file currently focused on the other pane.
Logic & Remarks: see previous paragraph.
Shortcut: Ctrl+Alt+K








