Defines starting with `h' in sys

• HASBUF sys/namei.h:127
• HASHFRACTION sys/gmon.h:92
• HISTCOUNTER sys/gmon.h:57
• HISTFRACTION sys/gmon.h:62
• HUPCL sys/termios.h:133
• HW_BYTEORDER sys/sysctl.h:214
• HW_DISKNAMES sys/sysctl.h:218
• HW_DISKSTATS sys/sysctl.h:219
• HW_MACHINE sys/sysctl.h:211
• HW_MAXID sys/sysctl.h:220
• HW_MODEL sys/sysctl.h:212
• HW_NCPU sys/sysctl.h:213
• HW_PAGESIZE sys/sysctl.h:217
• HW_PHYSMEM sys/sysctl.h:215
• HW_USERMEM sys/sysctl.h:216