Citrix MetaFrame Application for Windows 1.8 Administrator's Manual page 130

App is a script interpreter for secure application execution. App lets you write
execution scripts that copy standardized .ini files containing default settings to
user directories before starting the application and that perform application-related
cleanup after the application terminates. The script commands are described
below.
app scriptfilename
scriptfilename
The name of a script file containing app commands (see commands below).
If no scriptfilename is specified, app displays an error message.
The Application Execution Shell reads commands from the script file and
processes them in sequential order. The script file must reside in the
%SystemRoot%\Scripts directory.
The script commands are:
copy sourcedirectory\filespec targetdirectory
Copies files from sourcedirectory to targetdirectory. Filespec specifies the
files to copy, including wild cards (*,?).
delete directory\filespec
Deletes only files owned by the user in the directory specified. Filespec
specifies the files to delete, including wild cards (*,?).
deleteall directory\filespec
Deletes all files in the directory specified. Filespec specifies the files to delete,
including wild cards (*,?).