SONSetRealMarkChan

  SONSETREALMARKCHAN creates a REALMARK channel

  RET=SONSETREALMARKCHAN(FH, CHAN, SPHYCH, BUFSIZE, COMMENT,...
                  CHANTITLE, RATE, MINIMUM, MAXIMUM, UNITS, POINTS)
              FH = SON file handle
              CHAN = the channel number for the new channel
              SPHYCH = the physical channel number
              BUFSIZE = the size of the internal buffer (up to 32768 bytes)
              COMMENT = channel comment string
              CHANTITLE = channel title string
              RATE = expected mean rate (only used in sampling)
              MAXIMUM = approximate maximum value (for display only)
              MINIMUM = approximate minimum value (for display only)
              UNITS = channel units string
              POINTS = number of extra data entries for each marker

  Returns zero or a negative error

  Author:Malcolm Lidierth
  Matlab SON library:
  Copyright © The Author & King's College London 2005-2006