+ /**
+ * Gets the vertical layout offset of this signal.
+ */
+ int get_v_offset() const;
+
+ /**
+ * Sets the vertical layout offset of this signal.
+ */
+ void set_v_offset(int v_offset);
+
+ /**
+ * Returns true if the signal has been selected by the user.
+ */
+ bool selected() const;
+
+ /**
+ * Selects or deselects the signal.
+ */
+ void select(bool select = true);
+