API 20.2
https://docs.oracle.com/en/database/oracle/application-express/20.2/aeapi/index.html
Office Hours
https://asktom.oracle.com/pls/apex/f?p=100:500::::RP,500::
Document Converter demo
https://apex.oracle.com/pls/apex/apex_pm/r/document-converter/home?session=700390668008515