* normal way
DATA(rs1) = VALUE tt_rsdsselopt( ( sign = 'I' option = 'EQ' low = 'one' )
( sign = 'I' option = 'EQ' low = 'two' )
( sign = 'I' option = 'EQ' low = 'three' ).
* short way
DATA(rs1) = VALUE tt_rsdsselopt( sign = 'I' option = 'EQ' ( low = 'one' )
( low = 'two' )
( low = 'three' ) ).