% cat data1.su data2.su > data3.suIn addition, it may be necessary to renumber the traces via:
% cat data1.su data2.su | sushw key=tracl a=1 > data3.suso that the tracl parameter is monotonically increasing.
The second way of appending one dataset to another is to ``vertically'' append each trace of the second dataset to the end of the first dataset. This is done via ``suvcat.''
% suvcat data1.su data2.su > data3.suIn this case, no modification of the header fields should be necessary.