[This is preliminary documentation and subject to change.]
The UpdateResources action copies text or binary data into file resources.
Only properties specified in the data string.
The UpdateResources action must be sequenced after the InstallFiles action.
If the data string contains property parameters (that is, the property names within square brackets), the current values for those properties are substituted. If the resultant string begins with 0x, the string is treated as a hexadecimal value, and the resource is updated with the binary value.