Synopsis
		sfmythresh < in.rsf > out.rsf pclip=99. p=0.35 mode=

Parameters
		string mode= thresholding mode='hard', 'soft','pthresh' or 'exp'; 'hard', hard thresholding; 'soft', soft thresholding; 'pthresh', generalized quasi-p; 'exp', exponential shrinkage   float p=0.35 norm=p, where 0   float pclip=99. percentage to clip