levels of cobol

Level#

It specifies the hierarchy of data within a record. It can take a value from the set of integers between 01-49 or from one of the special level-numbers 66 77 88

01 level.        Specifies the record itself. It may be either a group item or an

Elementary item. It must begin in Area A.

02-49 levels.  Specify group or elementary items within a record. Group level items

                     must not have picture clause.

66 level.        Identify the items that contain the RENAMES clause.

77 level.        Identify independent data item.

88 level.        Condition names.