function?[hdr?record]?=?edfread（fname?varargin）
%?Read?European?Data?Format?file?into?MATLAB
%
%?[hdr?record]?=?edfread（fname）
%?????????Reads?data?from?ALL?RECORDS?of?file?fname?（‘*.edf‘）.?Header
%?????????information?is?returned?in?structure?hdr?and?the?signals
%?????????（waveforms）?are?returned?in?structure?record?with?waveforms
%?????????associated?with?the?records?returned?as?fields?titled?‘data‘?of
%?????????structure?record.
%
%?[...]?=?edfread（fname?‘a(chǎn)ssignToVariables‘?assignToVariables）
%?????????Triggers?writing?of?individual?output?variables?as?defined?by
%?????????field?‘labels‘?into?the?caller?workspace.
%
%?[...]?=?edfread（...‘desiredSignals‘desiredSignals）
%?????????Allows?user?to?specify?the?names?（or?position?numbers）?of?the
%?????????subset?of?s