Zero before decimal point 
| ID | STAT-21 |
| Title | Always use a zero before the decimal point in numeric expressions. |
| Priority | Recommended |
| Severity level | 9 |
| Description | Always use a zero before the decimal point in numeric expressions. |
| Rationale | Increases the readability of the code. |
Avoid:
THRESHOLD = .5;
Instead use:
THRESHOLD = 0.5;