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-rw-r--r--doc/ref/api-options.texi7
1 files changed, 5 insertions, 2 deletions
diff --git a/doc/ref/api-options.texi b/doc/ref/api-options.texi
index 152bf4693..0259b4b21 100644
--- a/doc/ref/api-options.texi
+++ b/doc/ref/api-options.texi
@@ -284,8 +284,11 @@ Indicates support for POSIX functions: @code{pipe}, @code{getgroups},
@item fork
Indicates support for the POSIX @code{fork} function (@pxref{Processes,
-@code{primitive-fork}}). This is a prerequisite for the @code{(ice-9
-popen)} module (@pxref{Pipes}).
+@code{primitive-fork}}).
+
+@item popen
+Indicates support for @code{open-pipe} in the @code{(ice-9 popen)}
+module (@pxref{Pipes}).
@item random
Indicates availability of random number generation functions: