The Representation of Textual Forms
Like everything else in Mathematica, the textual forms of expressions can themselves be represented as expressions. Textual forms that consist of one-dimensional sequences of characters can be represented directly as ordinary Mathematica strings. Textual forms that involve subscripts, superscripts, and other two-dimensional constructs, however, can be represented by nested collections of two-dimensional boxes.
Typical representations of textual forms.
This generates the string corresponding to the textual representation of the expression in InputForm
Here are the individual characters in the string.
Here is the box structure corresponding to the expression in StandardForm
Here is the InputForm
of the box structure. In this form the structure is effectively represented by an ordinary string.
If you use the notebook front end for Mathematica, then you can see the expression that corresponds to the textual form of each cell by using the menu item.
Here is the underlying representation of that expression in terms of boxes, displayed using the menu item.
|ToString[expr,form]||create a string representing the specified textual form of expr|
|ToBoxes[expr,form]||create a box structure representing the specified textual form of expr|
Creating strings and boxes from expressions.