set_use_size
Description:
If use_size is true, the font name will be written using the selected size.
Parameters:
| this | |
| use_size | If true, font name will be written using the selected size. | 
If use_size is true, the font name will be written using the selected size.
| this | |
| use_size | If true, font name will be written using the selected size. |