Sure:

1. At @BabbageCom, we deliver USB
   flash drives to our customers containing NVDA along with Nuance
   Vocalizer. However, many customers seem to lack the"skills to
   manually update their USB flash drive to"contain the most recent
   version of NVDA. With the inclusion of this pull request, things
   can get much easier for them and for us if we deliver them a
   simple script which deploys the most recent NVDA version to
   their USB flash drive using these command line parameters.

2. Apart from this, every user will be able to update their
flash drive portable copy with just two command line parameters
added to the launcher, rather than following the procedure of
starting a launcher, navigating to the create portable copy
option, manually filling in the path, creating the copy,
navigating to the new portable copy path, closing the current
copy of NVDA and starting the new one.

3. These parameters can also be
   used in the case current introduse the ability to postpone a downloaded update #4263 code is polished some more.
   Although there are some conserns about automatically updating
   portable copies, we can use the portable-path parameter to have
   the desired portable directory automatically filled in into the
   create portable directory window, for example.

Sorry @feerrenrut, realised that command line parameters should be added to the user guide.