Macros starting with `i' in sys

• IFTODT sys/dirent.h:76
• IFTOVT sys/vnode.h:191
• insque sys/systm.h:105
• _IO sys/ioccom.h:63
• _IOC sys/ioccom.h:61
• IOCBASECMD sys/ioccom.h:46
• IOCGROUP sys/ioccom.h:47
• IOCPARM_LEN sys/ioccom.h:45
• _IOR sys/ioccom.h:64
• _IOW sys/ioccom.h:65
• _IOWR sys/ioccom.h:67
• isbackground sys/tty.h:169
• isclr sys/param.h:171
• isctty sys/tty.h:165
• isset sys/param.h:170