public SequenceI getSubSequence(int start, int end);
/**
- * DOCUMENT ME!
+ * get the i'th character in this sequence's local reference frame (ie from
+ * 0-number of characters lying from start-end)
*
* @param i
- * DOCUMENT ME!
- *
- * @return DOCUMENT ME!
+ * index
+ * @return character or ' '
*/
public char getCharAt(int i);