All symbols starting with `a' in iokit/IOKit

• a iokit/IOKit/system.h:105
• ACK_TIMER_PERIOD iokit/IOKit/IOServicePM.h:42
• arg3 iokit/IOKit/IOCommandGate.h:77
• argSize iokit/IOKit/IOService.h:133
• argument iokit/IOKit/IOLib.h:65
• asyncRef iokit/IOKit/IOUserClient.h:46