# 2.2 Data Items

Compaq Fortran 77 statements contain the following data items:

- Constants

  Fixed, self-describing values.

- Variables

  Stored values represented by symbolic names.

- Arrays

  Groups of values that are stored contiguously and can be referred to individually or collectively. Individual values are called array elements.

- Character substrings

  A contiguous segment of a character variable or character array element.

- Records

  Structured data items consisting of one or more elements (scalars and arrays) or one or more groups of these elements. Different record elements in the same record can have unlike data types.

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