+#include "libsigrok.h"
+#include "libsigrok-internal.h"
+
+/**
+ * @file
+ *
+ * Helper functions to filter out unused probes from samples.
+ */
+
+/**
+ * @defgroup grp_filter Probe filter
+ *
+ * Helper functions to filter out unused probes from samples.
+ *
+ * @{
+ */