User talk:Mark.summerfield

September 2012
In general, a person or organization added to a list, as on List of PDF software, should have a pre-existing article to establish notability. If you wish to create such an article, please confirm that your subject is notable according to Wikipedia's notability guideline. Thank you. DMacks (talk) 15:16, 21 September 2012 (UTC)

I added the reference because I thought it would be useful since DiffPDF is open source and used by quite a lot of people. If you don't like it/don't want it then delete it.