IVerbFA
Declaration

IVerbFA : IDispatch
Overview

This interface is meant to edit an extension verb
Properties 

String Command
Gets or sets the command .
String Verb
Gets or sets the name of an
action. This action can be performed only on the files having an extension
the verb is associated with. You can select a verb from the suggested list
or you can also add your own verb names.
String Arguments
Gets or sets the command
line arguments passed to the program which the extension is associated
with, when this verb is selected. This string may contain any values, but
can also include special parameters as, for example, %1 - the absolute
path to the target file.