I'm scanning handwritten documents into eNotebooks and wanted to index it into a searchable database. However since there's no way OCR can read handwriting and there are a lot of schematic diagrams, I wanted to know if there was a way to put invisible text or keywords on each page to trigger searches. I can put, using the free text tool, keywords on each page but they're visible and a little unprofessional looking. If you could help me out here I'd appreciate it, thanks.