UTFT clear partial

Hi i use a touch tft whith UTFT libraries and i would like clear only a partition of tft becouse i have pics and i dont like load all. How i can do?

Thanks.

Draw a filled rectangle over the portion you wish to clear?

myGLCD.fillRect(0,0,159,239);

For example... would clear the left half of a 320*240 display.

Regards,

Graham