The 'is' prefix
| ID | NAMING-20 |
| Title | Reserve the is prefix for logical values. |
| Priority | Recommended |
| Severity level | 9 |
| Description | The is prefix shall be used for functions returning logical values or properties and variables holding logical values. |
| Rationale | This increases the readability of the code as it is clear from the name of the function/property/variable what data type can be expected. |