What is it? – Every now and then there is a tool that is so useful, so essential that we wonder how we ever got along without it.  But let’s consider, what is the real value of a tool?  The value in any tool is in what it accomplishes for us.  And in the case or our discussion today, that value is considerable.  It’s a challenge that we all face when working from detailed or complicated lines of instruction on charts.  Charts are graphic representations of knitting, embroidery or…