afreechart/src/main/java/org/afree/chart/block/AbstractBlock.java
/**
     * Reduces the specified area by the amount of space consumed by the margin.
     * 
     * @param area
     *            the area (<code>null</code> not permitted).
     * 
     * @return The trimmed area.
     */
Reduces the specified area by the amount of space consumed by the margin.

@param area
the area (null not permitted).

@return The trimmed area.
Reduces the specified area by the amount of space consumed by the margin . @param area the area ( null not permitted ) . @return The trimmed area .
protected RectShape trimMargin(RectShape area) {
        this.margin.trim(area);
        return area;
    }
protected RectShape trimMargin ( RectShape area ) { this . margin . trim ( area ) ; return area ; }
Reduces the specified area by the amount of space consumed by the margin.
Reduces the specified area by the amount of space consumed by the margin .
// defer argument checking...