In many cases, it is not necessary to display the classification-variable name in the
classification headers. Often, just the classification value is sufficient. Both the
DATALATTICE and DATAPANEL layouts support the HEADERLABELDISPLAY=
option. By default, HEADERLABELDISPLAY=NAMEVALUE, which displays both
the variable name and the value. You can set HEADERLABELDISPLAY=VALUE to
display only the value, or you can set HEADERLABELDISPLAY=NONE to suppress
the headers.
Row and column headers are unique to the DATALATTICE layout. By default,
COLUMNHEADERS=TOP, but you can set COLUMNHEADERS=BOTTOM ...
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