Symantec WINDOWS INSTALLER EDITOR 8.0 Reference page 146

Windows Installer Editor Reference
Remove value during install
This value is removed from the registry key. On the Registry page, a red
exclamation point appears over the icon of the registry value you selected.
This option appears only when you access the Registry Details dialog box
from the Registry page.
Root
This is enabled only when you access the Registry Details dialog box from the
Add button on the Registry page.
The top-level key in which the new key will be added. (Example:
HKEY_CURRENT_USER.)
Key
This is enabled only when you access the Registry Details dialog box from the
Add button on the Registry page.
Enter the name of the new key. Create an entire key path by separating key
names with backslashes. (Example: Entering
NewDocument\Protocol\StdFileEditing creates the StdFileEditing key inside the
Protocol key, which is created inside the NewDocument key.) Any keys in the
path that do not exist are created.
Value Name
Enter the name of a new named value. You can enter a formatted text string.
For information about formatted text strings, see Formatted and Registry Table
in the Windows Installer SDK Help.
Data Value
Enter the data for the value. You can enter a formatted text string. (Example:
To return the directory that contains MyApp.exe, enter a value of
[$component], where component is MyApp.exe; to return the directory and the
file name, enter a value of [#MyApp.exe].) For information about formatted
text strings, see Formatted and Registry Table in the Windows Installer SDK
Help.
Data Type
Select the type of data contained in the named value.
The associated Windows API data types are in parentheses below.
String
(REG_SZ) Identifies the value as an expandable string. To include a
property, enclose the property name in square brackets.
Unexpanded string
(REG_EXPAND_SZ) Identifies the value as a string that contains
unexpanded references to environment variables that are expanded when
the value is retrieved. Enclose the environment variables in single percent
signs. For example, %PATH%.
If you do not want the variable to be expanded, enclose it in double percent
signs. For example, %%WIN%%. This allows Windows system variables to
be embedded.
Double word
(REG_DWORD) Identifies the value as a 32-bit number in decimal notation.
Assembling an Installation
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