Defines starting with `w' in sys

• WAIT_ANY sys/wait.h:85
• WAIT_MYPGRP sys/wait.h:86
• WANTPARENT sys/namei.h:99
• w_coredump sys/wait.h:136
• WCOREFLAG sys/wait.h:49
• WMESGLEN sys/kinfo_proc.h:63
• WNOHANG sys/wait.h:76
• W_OK sys/unistd.h:55
• w_retcode sys/wait.h:137
• _WSTOPPED sys/wait.h:53
• w_stopsig sys/wait.h:139
• w_stopval sys/wait.h:138
• w_termsig sys/wait.h:135
• WUNTRACED sys/wait.h:77