+.\"
+.SS Semaphore initialization
+The values of the semaphores in a newly created set are indeterminate.
+(POSIX.1-2001 and POSIX.1-2008 are explicit on this point,
+although POSIX.1-2008 notes that a future version of the standard
+may require an implementation to initialize the semaphores to 0.)
+Although Linux, like many other implementations,
+initializes the semaphore values to 0,
+a portable application cannot rely on this:
+it should explicitly initialize the semaphores to the desired values.
+.\" In truth, every one of the many implementations that I've tested sets
+.\" the values to zero, but I suppose there is/was some obscure
+.\" implementation out there that does not.