orcl exp export command how to export big data table without exporting data only export table fields

exp h1/h1 file=D:\h1.dmp log=D:\h1.log tables=(h1.table1,h1.table2,h1.table3,h1.table4) rows=n

Mainly, the latter rows=n means that only the table structure is exported but not the data

tables=(h1.table1,h1.table2,h1.table3,h1.table4) rows=n

Mainly, the latter rows=n represents only table structure is exported but not data

tables=(h1.table1,h1.table2,h1.table3,h1.table4) is to export some specified tables