descriptors by default, which allows such sources to operate in a
chroot(2) jail without the associated device nodes being available. When
the B<keep> argument is zero, this call disables the retention of file
-descriptors. Conversely, a non-zero argument enables the retention of
+descriptors. Conversely, a nonzero argument enables the retention of
file descriptors. This function is usually called during initialization
and it takes effect immediately.