The shortened text does not mention file descriptors any more, it
should be easier to understand.
Also reformat the text slightly.
H: -mp: pedantic grab
H: -ma: aggressive grab
H:
-H: The various grab modes only differ in what happens if the
-H: file descriptor to write the grabbed audio data to is not
-H: ready for writing (i.e. would block). Sloppy mode ignores
-H: the write, pedantic mode aborts and aggressive mode tries
-H: to write anyway.
+H: The various grab modes only differ in what happens if an attempt to
+H: write the grabbed audio data would block. Sloppy mode ignores the
+H: write, pedantic mode aborts and aggressive mode tries to write anyway.
H:
H: -p Grab output of node PARENT of the buffer tree.
H: