# Automation in PxPlus

Appendix |

This Appendix includes supplementary COM information:

Help Topic | Description
Comparisons with Visual Basic | Handling common translation errors.
How COM Calls are Made by the DLL | DLL functionality overview.
OCX Controls | Information on OCX controls.
OLE Container Support | Information on OLE Container controls.
PXPOCX Misnomer | OLE, OCX and ActiveX technologies overview.
COM vs. Flat API Function Calls | Lists COM solutions to DLL problems.