Step 1: Open your Adobe program, go to menu Edit, and select Adobe PDF Presets.
Step 2: Select downloaded file: MySign(PDF-X)1a, Click Open.
Step 3: Check the file, MySign(PDF-X)1a has been added to your Adobe PDF Presets list, click OK.
Step 4: Select MySign(PDF-X)1a from the Adobe PDF Preset list, when saving your PDF file for printing.
