Bert, You are absolutely right and I am already convinced with .pdf format.
My reason for asking is because I am trying to decide about a fax software that can shorten the workflow process from Receive to SEND and for most part can minimize Doctor's time and clicks on the received fax file. In doing that,
I am trying WINFAX which saves the file in it's own file format which later can be converted into .pdf, etc. etc. But Winfax file editor is not great for Annotation. So Doctor has to open the file in Acrobat and add comments and signatures there. However, the good thing is that we can easily write .pdf files to Winfax printer when we are ready to send a fax.
On the other hand, I am also trying Snappyfax that is really a good program with a lot of features and it is very easy to setup in a network, if required. SF has a very good file view/editor. The best thing about it is the BURN feature that permanently saves the annotatation and the signature image. The annotated file can be saved in it's own database in addition to outside of Snappyfax. The other option I like that you can save the files in .pdf automatically when received in your specified folder.
However, the bad thing is that you cannot directly send or drag/drop a .pdf file into Snappyfax. It restricts you to .tiff, jpeg, etc. and that is where I stop and think about other options available. You can print a .pdf file to snappyfax printer once you open the file in Acrobat, but you lose the quality a little in this process..that I don't like...
Annotations(markups, comments, signatures, etc. etc.), as you know in Acrobat can be inserted but I haven't figure out it to make it permanent (burn it). Is there such feature in Acrobat? I use Acrobat Statndard 8 fo all of this.