- * if the start or end column is gapped, startPos or endPos may be to the
- * left or right, and we may have included adjacent or enclosing features;
- * remove any that are not enclosing features
+ * if end column is gapped, endPos may be to the right,
+ * and we may have included adjacent or enclosing features;
+ * remove any that are not enclosing, non-contact features