16 Jun
2005
16 Jun
'05
3:19 p.m.
Seriously though, it is possible to put text into pdfs. That's why you can copy and paste out of them. Granted, there are a lot of places that just scan in material and post that, but it is not the only thing that you can do with pdfs. PDF is derived from postscript after all.
Just because you can put down a cursor and go from one x,y to another x,y does not mean you are "selecting" what is visible on the screen, as your human eyes see it. PDF is pure layout, no structure. Tables are positioned text and lines, columns are positioned text... its basically OCR, without any character detection. David A. Desrosiers desrod@gnu-designs.com http://gnu-designs.com