Need info from a programmer.

%SystemRoot%\Explorer.exe /e,/idlist,%I,%L

Now copied this from the registry obviously ...

%SystemRoot%\Explorer.exe i know this is the path value
i know "/e, /idlist" are command line switches and they are basically specific for the program in question...

But i don't know what "%I, %L, %1" and the others I've seen floating around are.
I figure there are some sort of predefined program strings or someting. I want to know how they are called so i can find a tutorial and learn about them so ill be able to use them around my XP to make my own convinient stuff out of shortcuts and bat files

 

% is used when a space is involved so /idlist,%I,%L
means idlist, I, L

 

Code:

 Command Parameters
  %L       1st parameter as lfn
  %1       1st parameter as either lfn or sfn depending on type
                 of program
  %I        idlist (internal windows structure used only by explorer)
                 another way of identifying a file, but valid only while
                 a particular folder window is open
  %0        actual program name (not found in registry)
  %2-9     second to ninth parameters on the command line
                   can include any preferred number of parameters
  %*        all remaining parameters on the command line

 compound examples
     %1 %*         first parameter, then all remaining parameters
                            on the command line
     %1 %2 %*   first parameter, second parameter, then all
                             remaining parameters
     %-5              remaining parameters from the fifth parameter
                             on

 DDE Parameters
  %S                  show command (maximize, minimize, etc.)
  %H                  hotkey

Essentially %L %1 etc. are placeholders for actual data, some of which may be iterative or recursive in nature. It's part of the Windows messaging scheme.