conn: update header comment
** described in the ++khan section of sys/lull.hoon. to
** summarize:
**
-** +$ task $%(... [%fyrd p=fyrd]) ::
-** +$ fyrd [=bear name=term =out=mark data=(cask)] :: thread request
+** +$ task $%(... [%fyrd p=(fyrd cast)]) ::
** +$ bear $@(desk beak) :: partial $beak
+** +$ cast (pair mark page) :: output mark +input
+** ++ fyrd |$ [a] [=bear name=term args=a] :: thread run request
**
-** the passed mark is applied to the output. the cask (short for
-** (cask *)) at data contains the input mark. e.g. to run -code
-** with ~ as input, receiving output as a +tape, with request-id
-** set to 32, send the +jam of this noun over the socket with
-** newt framing:
+** the cast's mark is applied to the output. the page (untyped
+** cage, or pair of mark and noun) in args contains the input
+** mark. e.g. to run -hi with the ship ~zod as input, receiving
+** output as a tape, with request-id set to 32, send the +jam of
+** this noun over the socket with newt framing:
**
-** [32 %fyrd [%base %code %tape [%noun ~]]]
+** [32 %fyrd [%base %hi %tape [%ship ~zod]]]
**
** responses to %fyrd are either %fail if something went wrong
** in the driver, or %avow to indicate success or failure from
-** %khan. $avow is: (each (cask) goof).
+** %khan. the body of avow is (each page goof).
**
** %peek is a namespace read request (aka scry), and will be
** forwarded directly to arvo. its arguments are the nom of the
