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 sizeof                  Size of Variable or Type (unary)

 sizeof(var)             size of variable (in bytes)
 var                     any variable or variable component (array element,
                         record field)
 sizeof(type)            size of type (in bytes)
 type                    any defined data type

    The sizeof operator returns the size of the specified variable or
    data type in bytes.  The resulting value is of type signed int, so if
    the size is greater than 32767 bytes, the value is negative.