Single panel commands can be broken into three categories (listed below):
Commands that deal with selecting/marking files
Select All
Deselect All
Invert Selections
Select Found
Select Newer
Select Updated
Select Files Containing
Commands that deal with file details or their contents
Open
View/Edit
Print File Info
Print File Contents
Commands that modify files in some way
Change Attributes
Rename File(s)
Delete Marked
Folder Commands (click right mouse button over the list of folders).
Single panel commands can be broken into two categories (listed below). Remember that all commands applied will refer to the currently selected folder and all folders within.
Commands that help you locate a folder
Expand One Level
Expand All Levels
Collapse All Levels
Whereis
Commands that modify folders in some way
New Folder
Delete Folder
Rename Folder
Dual Panel Commands
File Commands (select any number of files, then click on one
of the selected files and drag them to the other session and drop)
Folder Commands (select one folder at any level and drag to the other session and drop on a folder in that session)
Commands not Associated with a Panel