r
       in the current directory.

 annotator
       String specifying the name of the annotation file in the WFDB path or
       in the current directory.

 Optional Parameters are:

 C
       A 1x1 integer. Read only the annotations for signal C.
 N
       A 1x1 integer specifying the sample number at which to stop reading the
       record file (default read all = N).
 N0
       A 1x1 integer specifying the sample number at which to start reading the
       annotion file (default 1 = begining of the rec