Wraps text into a paragraph. Defines the
$columns variable, which specifies the output line
length. Default is 76. Exported on request.
Provides the following function.
wrap (init_str, other_str, text)
Breaks lines of array text at the word
boundary closest to the size of a line. Prepends
init_str to the first output line and
other_str to subsequent lines, for
indentation. Exported by default.
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