- ϡ ǡ ߡ . ɡ ɡ . . ǡ ߡ . ء . ɡ ɡ ߡ .ǡ Start/stop . ɡ () ʡ ǡ . ɡ ϡ . . ǡ . ơ . ʡ ǡ : 1- ( ) ( ) (+) .2- ( ) ( ) .3- ( ) ( ) (-) .4- ( ) ɡ .5- ɡ .6- ( ) ɡ ( ) . ɡ ǡ .