--- Libc/Libc-320/pthreads/pthread_detach.3
+++ Libc/Libc-498.1.1/pthreads/pthread_detach.3
@@ -39,7 +39,9 @@
 .Sh SYNOPSIS
 .Fd #include <pthread.h>
 .Ft int
-.Fn pthread_detach "pthread_t thread"
+.Fo pthread_detach
+.Fa "pthread_t thread"
+.Fc
 .Sh DESCRIPTION
 The
 .Fn pthread_detach
@@ -59,10 +61,10 @@
 If successful,  the
 .Fn pthread_detach
 function will return zero.
-Otherwise an error number will be returned to
+Otherwise, an error number will be returned to
 indicate the error.
 Note that the function does not change the value
-of errno as it did for some drafts of the standard.
+of errno, as it did for some drafts of the standard.
 These early drafts
 also passed a pointer to pthread_t as the argument.
 Beware!