Symantec WINDOWS INSTALLER EDITOR 8.0 Reference page 226

Windows Installer Editor Reference
Do not display reboot prompts
Mark this to restart without end user interaction. This does not perform a restart,
but suppresses the prompt if a restart occurs.
Rollback Option
Specify how the installation should handle rollbacks. A rollback is the process of
returning the computer to its original state in the event that an installation in
progress is canceled. A rollback requires the installation to back up existing files
instead of just replacing or deleting them and therefore takes more disk space.
Prompt user to continue without rollback if out of disk space
If the destination computer has insufficient disk space for the copies of replaced
and deleted files, the end user is asked whether to continue without a rollback.
Disable rollback without prompting only if out of disk space
The installation continues without a rollback if the destination computer has
insufficient disk space for a rollback.
Fail if out of disk space
The installation is canceled if the destination computer has insufficient disk
space for a rollback. A message informs the end user of the failed installation.
Rollback if possible with no prompting
This is the default behavior for rollbacks, which is to roll back if possible without
prompting the user.
Disable rollback
The installation does not create a rollback script and does not support rolling
back a canceled installation.
Create advertised shortcuts as regular shortcuts
Mark this to have the installation generate regular shortcuts rather than shortcuts
supporting installation-on-demand and advertisement. This disables self-repair on
shortcuts, which can prevent problems with application repairs occurring when the
shortcut is moved or deleted.
Reinstallation Options
Reinstallation occurs if Windows Installer determines that an application needs to be
repaired. Specify the reinstallation options:
File Replacement
Specify how the installation handles reinstallation of a file.
Reinstall all per-user based registry keys
Mark this to reinstall registry keys the installation places in the
HKEY_CURRENT_USER or HKEY_USERS directory on the destination computer.
Reinstall all shortcuts
Mark this to reinstall all shortcuts and re-cache all icons. This also overwrites
existing shortcuts and icons.
Re-cache local copy of installation
By default, the installation is stored on the destination computer, without the
actual installation files. Mark this to run the installation, when a reinstallation
occurs, from the original source instead of the cached copy on the local
computer. Then, the installation on the source media is copied to the local
computer.
See also:
Advanced Installations
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