Is there a String Resource equivalent in RPM?

[Daniel Yek <dyek real com>]

Hi,

Is there a String Resource or equivalence in RPM package that one can edit 
using Hex Editor and have the package still valid without another rebuild? 
It can be text or binary, but it needs to be uncompressed, and not 
affecting RPM package checksum.

It would be best if #postinst script can easily query the value of the 
String Resource.

I guess a less-optimal compromise is to repackage the RPM only, without 
rebuild the binary tar ball, so that files can be modified or added before 
repackaging.

What is the least effort, best practice?

Thanks in advance for any information.


--
Daniel Yek