specifies one or more
variables to print instead of the observation number at the beginning
of each row of the report.
Restriction:If the ID variables occupy so much space that no room
remains on the line for at least one other variable, PROC PRINT writes
a warning to the SAS log and does not treat all ID variables as ID
variables.
Interaction:If a variable in the ID statement also appears
in the VAR statement, the output contains two columns for that variable.
specifies the style
element to use for ID columns created with the ID statement.
Tip:To specify different style elements for different ID columns,
use a separate ID statement for each variable and add a different
STYLE option to each ID statement.
See:For information about
the arguments of this option and how it is used, see the STYLE= option
in the PROC PRINT statement.