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Displays or modifies file types used in file extension associations

FTYPE [fileType[=[openCommandString]]]

fileType  Specifies the file type to examine or change
openCommandString Specifies the open command to use when launching files
of this type.

Type FTYPE without parameters to display the current file types that
have open command strings defined.  FTYPE is invoked with just a file
it displays the current open command string for that file type.
Specify nothing for the open command string and the FTYPE command will
delete the open command string for the file type.  Within an open
command string %0 or %1 are substituted with the file name being
launched through the assocation.  %* gets all the parameters and %2
gets the 1st parameter
%3 the second
etc.  %~n gets all the remaining
parameters starting with the nth parameter
where n may be between 2 and 9

inclusive.  For example:

ASSOC .pl=PerlScript
FTYPE PerlScript=perl.exe %1 %*

would allow you to invoke a Perl script as follows: 1 2 3

If you want to eliminate the need to type the extensions
then do the


and the script could be invoked as follows:

script 1 2 3