This example package file demonstrates applying a partial upgrade to another PKG file.
; Upgrading a component
;Languages
&EN,FR
;Header - 0x80000003=UID of app being upgraded.
;Uses the same name(s) as the original.
;Version number increments.
#{"Depend-EN", "Depend-FR"}, (0x80000003), 1, 3, 1, TYPE=PU
%{"Vendor-EN","Vendor-FR"}
:"Vendor"
; install one additional file to same drive as original (the system drive)
"text\file1.txt"-"$:\private\80000004\import\file.txt"
; overwrite one existing file on same drive as original (the system drive)
"file.txt" - "$:\private\80000004\file.txt"