- * Returns the range of sequence positions included in the given alignment
- * position range. If no positions are included (the range is entirely gaps),
- * then returns null.
- *
- * <pre>
- * Example:
- * >Seq/8-13
- * ABC--DE-F
- * findPositions(1, 4) returns Range(9, 9) // B only
- * findPositions(3, 4) returns null // all gaps
- * findPositions(2, 6) returns Range(10, 12) // CDE
- * findPositions(3, 7) returns Range(11,12) // DE
- * </pre>
- *
- * @param fromCol
- * first aligned column position (base 0, inclusive)
- * @param toCol
- * last aligned column position (base 0, inclusive)
+ * Returns the from-to sequence positions (start..) for the given column
+ * positions (1..), or null if no residues are included in the range