gawk: Values

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1 6.1 Constants, Variables, and Conversions
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1 Expressions are built up from values and the operations performed upon
1 them.  This minor node describes the elementary objects that provide the
1 values used in expressions.
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· Constants                   String, numeric and regexp constants.
· Using Constant Regexps      When and how to use a regexp constant.
· Variables                   Variables give names to values for later use.
· Conversion                  The conversion of strings to numbers and vice
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