COBOL workshop
An old-school generator of batch COBOL programs: describe your data elements, the record and the report to produce, write your procedures in structured language. The COBOL program is generated, then run in your browser, with a DB2-style database. Nothing to install, no account.
Data
Processing
Database
Columns 1 to 6: sequence numbers
Column 7: * comment
Area A from 8, area B from 12
Beyond 72: ignored
Click Run.