Hi,
Ive looked at http://en.pdf24.org/faq/display?which=text-search-engine#jf2505c732 already but just wanted to add this here in case that is no longer looked at.
In short the ability to be able to search a PDF while it is being worked with in terms of spitting and merging PDFs.
The reason we require it is if you have a large PDF file and need to search for the page you need to say spilt at the only way is to have the file open in another program and find the page you need. that itself is a little tedious but then a new problem is created because the page numbers have now changed within PDF24 so they no longer match the reference document.
Cheers,