This quote is taken from the help file for PDF-Xchange free PDF Viewer:
"And then ... for some reason only known to Adobe, they decided that some functionality would be available to users of their free Adobe Reader only if they used a product officially 'certified' this functionality to do so by Adobe - all competing software applications would now have to apply to Adobe for a certificate or the new functionality would not be possible with files made by competing and 'non' certified PDF creation and manipulation tools.
Suddenly the 'Open' PDF format was not so open and it is our concern that Adobe will continue to extend this in the future to regain some degree of control over who can create software with the ability to offer advanced PDF creation and manipulation functionality - whereas in the past the primary reason for the success of this standard format has been the fact that any software company has been free to create products for the purpose without interference from any party - including Adobe."
What effect do these restrictions have on other products that create PDF files? Are there security risks associated with opening PDF files form uncertified PDF file creation products?
It seems that this policy was enough to make this software vendor spend two years developing their Free PDF Viewer.
Whatever the reasons, I am glad they did. They have produced a first class product that seems thus far to be better than Adobe Reader.
Thanx very much for your link, just downloaded and installed and made it my default reader, it's got a great search facility and also you can send straight to email which fires up Thunderbird....brilliant!!
Oh yes, almost forgot, got new version of Print screen (4.1)which I always use...thanx again!