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-rw-r--r--Doc/lib/libos.tex3
1 files changed, 2 insertions, 1 deletions
diff --git a/Doc/lib/libos.tex b/Doc/lib/libos.tex
index 8c4b770..a9100a1 100644
--- a/Doc/lib/libos.tex
+++ b/Doc/lib/libos.tex
@@ -547,7 +547,8 @@ documentation; flag constants (like \constant{O_RDONLY} and
This function is intended for low-level I/O. For normal usage,
use the built-in function \function{open()}, which returns a ``file
object'' with \method{read()} and \method{write()} methods (and many
-more).
+more). To wrap a file descriptor in a ``file object'', use
+\function{fdopen()}.
\end{notice}
\end{funcdesc}