'Enter the OEM'

Another parallel version, new product name, OEM company name, new graphics → more entities and marked sections

<!-- this sets the product name etc --> 
<!-- only change strings inside quotes--> 
<!ENTITY product.name "7M Aspire"> 
<!ENTITY product.dir.base "7MAspire"> 
<!ENTITY company.short "SevenMountains"> 
<!ENTITY company.long "SevenMountains Software"> 
<!ENTITY documentation.email "documentation@7m.com">

Search and replace: SevenMountains Software&company.long;

Change make files to handle graphic files and other resources, check all else is equal:

Manual with "branding"