1   Internal Representation of Values
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     Internally, Clipper represents data values using a small data
     structure called a VALUE.  The contents and format of a VALUE
     differ depending on the type of data it represents.  Simple data,
     such as integers, are coded directly into the VALUE.  Larger data,
     such as strings or arrays, cannot be directly contained in a
     VALUE.  Instead the VALUE contains a "reference" to the string or
     array (references are discussed below).