15. A computing system, comprising: at least one processor; and at least one memory having computer-readable instructions that when executed by the at least one processor cause the computing system to perform a method, the method comprising: receiving a selection of textual content comprising at least a first line of text and a second line of text that are not included in a hierarchical graphic, wherein there is a hierarchical relationship between the first line of text and the second line of text; receiving a selection of a conversion command; generating the hierarchical graphic from the selected textual content, the hierarchical graphic comprising: at least a first graphical shape encapsulating the first line of text; and at least a second graphical shape encapsulating the second line of text, wherein there is a graphical hierarchical relationship between the first graphical shape and the second graphical shape that corresponds to the hierarchical relationship between the first line of text and the second line of text; and replacing the selected textual content with the hierarchical graphic.
20. The computing system of claim 15 , further comprising: substantially simultaneously displaying the hierarchical graphic with the selected textual content; receiving edits to the selected textual content; and in response to receiving the edits, displaying edits to the hierarchical graphic that correspond to the edits to the selected textual content.