Tab characters 
| ID | LAYOUT-13 |
| Title | Do not use tab characters. Use spaces instead. |
| Priority | Recommended |
| Severity level | 9 |
| Description | Do not use tab characters. Use spaces instead. By default, MATLAB inserts spaces when the TAB key is pressed. |
| Rationale | The number of characters used to display a tab character may vary depending on the MATLAB preferences. Inserting spaces prevents any display issues related to this. |