In Delphi (Pascal) there are prefixes for each class and variable declaration this is useful to know where they are from

| Prefix | Meaning   | Example                   | Context                             |
| ------ | --------- | ------------------------- | ----------------------------------- |
| **T**  | Type      | `TButton`, `TStringList`  | Class, Record or Enum definitions   |
| **L**  | Local     | `LCount`, `LTempResult`   | Variables defined inside a function |
| **F**  | Field     | `FName`, `FID`            | Private variables inside a class    |
| **A**  | Argument  | `AName`, `AValue`         | Parameters passed into a function   |
| **I**  | Interface | `IUnkown`, `ISeralizable` | Interface definitions               |