zsave

 ZSAVE(fl,data,message) saves zoo files to disk with processing step information appended to the 
 zoosystem 'Processing' branch.

 ARGUMENTS
  fl       ...  Full path to file (string)
  data     ...  Zoo data
  message  ...  Further details about processing step (string). Default: Current date.

 e.g.1 If the function bmech_partition is run, then calling zsave(fl,data)
 will add 'bmech_partition' to the branch 'data.zoosystem.processing'

 e.g.2 If the function bmech_removechannel is called to remove the
 channels ch = {'RKneeAngle_x','LAnkleAngle_y'} then calling
 zsave(fl,data,ch) will add 'bmech_removechannel 'RKneeAngle_x','LAnkleAngle_y'
 to the branch 'data.zoosystem.processing'

 See also save, zload