Subreport is like the main report however the values from

the subreport can be passsed to the main report. If we wish

to link the subreport to the main rport then it is called

as a 'Linked Sub report' else it is a 'Un linked Sub

report'. Any number of sub reports ca be placed in a main

report. However the maximum number being 256. In practise

you would never have so many sub - reports in a main

report.