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diff --git a/src/utils/lookbib/lookbib.man b/src/utils/lookbib/lookbib.man
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--- a/src/utils/lookbib/lookbib.man
+++ b/src/utils/lookbib/lookbib.man
@@ -1,5 +1,5 @@
.ig \"-*- nroff -*-
-Copyright (C) 1989-1995 Free Software Foundation, Inc.
+Copyright (C) 1989-2000 Free Software Foundation, Inc.
Permission is granted to make and distribute verbatim copies of
this manual provided the copyright notice and this permission notice
@@ -31,6 +31,9 @@ the original English.
.BI \-t n
]
.IR filename \|.\|.\|.
+.PP
+It is possible to have whitespace between a command line option and its
+parameter.
.SH DESCRIPTION
@g@lookbib prints a prompt on the standard error (unless the standard input is not a terminal),
reads from the standard input a line containing a set of keywords,