-.PP
-.in +5n
-.nf
-.ta +2i
-process ID see \fIgetpid\fP\|(2)
-parent process ID see \fIgetppid\fP\|(2)
-process group ID see \fIgetpgrp\fP\|(2)
-access groups see \fIgetgroups\fP\|(2)
-working directory see \fIchdir\fP\|(2)
-root directory see \fIchroot\fP\|(2)
-control terminal see \fItty\fP\|(4)
-resource usages see \fIgetrusage\fP\|(2)
-interval timers see \fIgetitimer\fP\|(2)
-resource limits see \fIgetrlimit\fP\|(2)
-file mode mask see \fIumask\fP\|(2)
-signal mask see \fIsigvec\fP\|(2), \fIsigsetmask\fP\|(2)
-.in -5n
-.fi
-.PP
-When the executed program begins, it is called as follows:
-.PP
-.DT
-.nf
- main(argc, argv, envp)
- int argc;
- char **argv, **envp;
-.fi
-.PP
+.Pp
+.Bl -column parent_process_ID -offset indent -compact
+.It process ID Ta see Xr getpid 2
+.It parent process ID Ta see Xr getppid 2
+.It process group ID Ta see Xr getpgrp 2
+.It access groups Ta see Xr getgroups 2
+.It working directory Ta see Xr chdir 2
+.It root directory Ta see Xr chroot 2
+.It control terminal Ta see Xr termios 4
+.It resource usages Ta see Xr getrusage 2
+.It interval timers Ta see Xr getitimer 2
+.It resource limits Ta see Xr getrlimit 2
+.It file mode mask Ta see Xr umask 2
+.It signal mask Ta see Xr sigvec 2 ,
+.Xr sigsetmask 2
+.El
+.Pp
+When a program is executed as a result of an
+.Fn execve
+call, it is entered as follows:
+.Bd -literal -offset indent
+main(argc, argv, envp)
+int argc;
+char **argv, **envp;
+.Ed
+.Pp