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diff --git a/doc/a2ps.texi b/doc/a2ps.texi
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index 1b64234..59e0834 100644
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--- a/doc/a2ps.texi
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+++ b/doc/a2ps.texi
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@@ -1,4 +1,5 @@
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 \input texinfo @c -*- texinfo -*-
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+@documentencoding utf-8
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 @c %**start of header
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 @setfilename a2ps.info
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 @settitle General Purpose PostScript Generating Utility