In a system, such as a communications, computer, automatic data processing, information, or control system, the placing of headings on data units of a file, such as (a) records, (b) messages, (c) graphs, (d) pictures, or (e) rows or columns on a spreadsheet, so that the headings will remain in place when the file is scrolled, usually using menu options of a computer application program, such as a personal computer program, and control data. See also  application program,  automatic data processing system,  column,  communications system,  computer program,  computer system,  control system,  data unit,  file,  header,  heading,  information system,  menu,  message,  option,  record,  row,  personal computer,  picture,  scroll,  spreadsheet.