* sequence is wrapped around an input buffer, the results will
* depend on the current position and length of that buffer.
*
- * @param cs the character sequence to append. If cs is null,
+ * @param seq the character sequence to append. If seq is null,
* then the string "null" (the string representation of null)
* is appended.
* @return a reference to this object.
* output stream underlying this writer, starting and ending at the
* specified positions within the sequence. The behaviour of this
* method matches the behaviour of writing the result of
- * <code>append(cs.subSequence(start,end))</code> when the sequence
+ * <code>append(seq.subSequence(start,end))</code> when the sequence
* is not null.
*
- * @param cs the character sequence to append. If cs is null,
+ * @param seq the character sequence to append. If seq is null,
* then the string "null" (the string representation of null)
* is appended.
* @param start the index of the first Unicode character to use from