The WPHorizontalLine class defines the following API properties that specify the appearance of horizontal lines in the document:
void setAlign(String align) /* Sets the alignment of the rule to left, right, or center. */
String getAlign() /* Returns the alignment of the rule: left, right, or center. */
void setSize(int size) /* Sets the height of the line. [[PS: Do you mean the length of the line?]] */
int getSize() /* Returns the height of the line. [[PS: Do you mean the length of the line?]] *
void setWidth(int width) /* Sets the line width. */
int getWidth() /* Returns the line width. */
void setColor(Color c) /* Sets the line color. [[PS: Same question about Color data type.]] */
Color getColor() /* Returns the line color. */