| object - class |
| Object Orientated |
| Object Orientated Programming (OO) |
| Objects |
| Objects - dict |
| Objects - list |
| Objects - set |
| Objects - tuple |
| oct - function |
| Octal |
| octdigits - constant |
| Office Add-ins - Bespoke Solutions |
| Office Add-ins - Consultancy |
| Office Add-ins - Development |
| Office Add-ins - JavaScript |
| Office Add-ins - Python |
| Office Add-ins - TypeScript |
| Office Add-ins - VS Code |
| Office Add-ins - VSTO |
| One Dimensional Array |
| Online Resources |
| open - function |
| openpyxl |
| Operator - != |
| Operator - == |
| Operator - Addition |
| Operator - Comparison |
| Operator - Division |
| Operator - Equality |
| Operator - Multiplication |
| Operator - Subtraction |
| Operator Precedence |
| Operators |
| Operators - - |
| Operators - % |