FOR %%A IN (list) DO command parameters
list is a list of any elements, separated by either spaces, commas or semicolons.
command can be any internal or external command, batch file or even - in OS/2 and NT - a list of commands
parameters contains the command line parameters for command. In this example, command will be executed once for every element in list, using parameters if specified.
A special type of parameter (or even command) is %%A, which will be substituted by each element from list consecutively.
From FOR loops