: Instead of opening the PDF directly, designers often "place" or "import" it into a new document and use a transparency flattener to turn the text into shapes (outlines). This preserves the look but kills the ability to edit the text. The Export Fix
The CID font structure is based on the Adobe CID font specification, which defines a standard format for CID fonts. The CID font structure consists of: Cidfont-f1 Font