message(" timeb, timee. Time interval. If present, time must be absent");
message(" out. Output file. Default: out.bin");
message(" Keys for source=NEMO");
message(" var can be temp, sal, mld, ssh or w. Mld is not available for dataset=NRT6.");
message(" dataset. Can be DT, NRT or NRT6. Default: DT");
message(" layer and/or depth. Layer or depth of NEMO dataset. If depth is specified, layer is ignored. Both ignored, if var=mld. Default: layer=0");
message(" layer and/or depth. Layer or depth of NEMO dataset. If depth is specified, layer is ignored. Both ignored, if var=mld or var=ssh. Default: layer=0");
message(" lonb, lone, latb, late. Required. Region of interest");
message(" Keys for source=HYCOM");
message(" dataset. Can be Forecast, Hindcast or Reanalysis. Default: Forecast");
message(" layer and/or depth. Layer or depth of HYCOM dataset. If depth is specified, layer is ignored. Both ignored, if var=mld or var=ssh. Default: layer=0");
message(" lonb, lone, latb, late. Required. Region of interest");