--- /dev/null
+package jalview.api;
+
+public interface AlignmentColsCollectionI extends Iterable<Integer>
+{
+ /**
+ * Answers if the column at the given position is hidden.
+ *
+ * @param c
+ * the column index to check
+ * @return true if the column at the position is hidden
+ */
+ public boolean isHidden(int c);
+}