; TELL
;---------------------------------------------------------------
;! Send parameters to tasks that know to read them on the fly
;# PSEUDOVERB GENERAL
;-----------------------------------------------------------------------
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TELL      LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
TELL:  Verb to send parameters to a task from AIPS in execution
OPTELL                             TELL operation code
TASK                               Task name
NUMTELL         0.0        35.0    AIPS number of running task
VERSION
                                   Version of task desired.
          Task name may be inserted as an immediate argument
          i.e TELL TASK or TELL 'TASK'
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TELL
Type: Pseudoverb
Use:  Sends selected parameters to those tasks that know how to
      use this option.  Use SHOW TASK to review these
      parameters.  TELL works by putting the parameters in a
      file.  At some later time, the task reads this file and
      acts on the request.
Adverbs:
  OPTELL...Nature of the operation:
              'ABOR'  Die now, reset file statuses and delete
                      outputs.
              'QUIT'  Die now, but save the current output
                      results.
              'CHAN'  Change the running parameters.
  TASK.....Requested task name (5 characters or less).
  NUMTELL..AIPS number of the task to be "told" - this allows
           you to tell batch jobs to terminate gracefully.
           0 => current AIPS number.
  DOWAIT...Logical adverb.  True (> 0) specifies that AIPS
           not resume until the requested task has finished.
  VERSION..Desired version of the task, i.e. 'NEW', 'OLD'.  See
           HELP VERSION for details.

Grammar:          TELL      or      TELL taskname
            The first TELLs the task referred to by the
            adverb TASK.  The second TELLs the task 'taskname'.
Examples:   TASK='CNTR'; TELL            TELLs the task CNTR
            TELL IMAGR                   TELLs the task IMAGR.
            Note that the adverb TASK is not set to 'IMAGR' in
            the second example.

Tasks which support this capability:
  APCLN.....Deconvolves images with B. G. Clark CLEAN method.
            Can change DOTV, NITER, beam, and other parameters.
  IMAGR.....Wide-field and/or wide-frequency Cleaning / imaging.
            Can change quite a few parameters
  SCMAP.....Imaging plus self-calibration loop with editing
            Can change several imaging and self-cal parameters.
  SCIMG.....Full-featured imaging plus self-calibration loop with
            editing.  Can change imaging, editing, and self-cal
            parameters.
  SDCLN.....Deconvolves images with CLEAN followed by SDI
            methods.  Can change DOTV, NITER, beam, and other
            parameters.
  UTESS.....Deconvolves multiple images with maximum entropy
            methods - for images of polarization.  Can change
            DOTV, NITER, other parameters.
  VTESS.....Deconvolves multiple images with maximum entropy
            methods.  Can change DOTV, NITER, other parameters.
Tasks which support QUIT or ABOR operations only:
  MCUBE.....Builds n+1 (or n) dimensional images from sets of
            n-dimensional images.
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