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-rw-r--r--doc/serdi.17
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/serdi.1 b/doc/serdi.1
index c834ce42..b89bfba7 100644
--- a/doc/serdi.1
+++ b/doc/serdi.1
@@ -139,6 +139,13 @@ Display version information and exit.
Write output to the given
.Ar filename
instead of stdout.
+.Pp
+.It Fl x
+Support parsing variable nodes.
+Variables can be written in SPARQL style, for example
+.Dq ?var
+or
+.Dq $var .
.El
.Sh EXIT STATUS
.Nm