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31.5. use bytes

use bytes;
no bytes;

The use bytes pragma disables character semantics for the rest
of the lexical scope in which it appears. The no bytes pragma
can be used to reverse the effect of use bytes within the current
lexical scope.

Perl normally assumes character semantics in the presence of character
data (that is, data from a source marked as being of a particular
character encoding).

To understand the implications and differences between character
semantics and byte semantics, see Chapter 15, "Unicode".
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