code: public MultiChangeBuilder<PS, SEG, S> deleteTextAbsolutely(int startParagraph, int startColumn, int endParagraph, int endColumn) {
          int start = area.getAbsolutePosition(startParagraph, startColumn);
          int end = area.getAbsolutePosition(endParagraph, endColumn);
          return replaceTextAbsolutely(start, end, "");
      }
docs: Removes a range of text.
  
  It must hold {@code 0 <= start <= end <= getLength()} where
  {@code start = getAbsolutePosition(startParagraph, startColumn);} and is <b>inclusive</b>, and
  {@code int end = getAbsolutePosition(endParagraph, endColumn);} and is <b>exclusive</b>.
  
  <p><b>Caution:</b> see {@link StyledDocument#getAbsolutePosition(int, int)} to know how the column index argument
  can affect the returned position.</p>