1. To define a new signature, choose Edit->Signature->Define...
  2. Choose an image file to use as your signature - any PDF, JPEG, PNG, Tiff or BMP image will work.
    Infix will make a copy of this file and use it in future.
  3. Then enter a name for this signature. This is the name that will appear in the Signature menu.
  4. Your signatures will be available for use in the Edit->Signature->Insert submenu.