1. A method performed on a computing device, the method for visualizing multidimensional data on a graphical display, the method comprising: positioning, by the computing device, a highest level overview of a set of relational data near a predefined line of the graphical display; forming, by the computing device, a plurality of stems that branch outward from the predefined line, and assigning respective sub-topics of the set of relational data to respective ones of the plurality of stems; generating, by the computing device, a bubble near an end of one of the plurality of stems, and including with the bubble an instance of relational data that is pertinent to a particular sub-topic assigned to the one of the plurality of stems; and selecting one of a set of widths for one of the plurality of stems, where the one of the set of widths qualifies the respective sub-topic of the set of relational data associated with the one of the plurality of stems, to add an additional dimension to the respective sub-topic of the set of relational data.