InterpretationBox
Wolfram Kernel
Execution environment
Make a formatting structure whose interpretation is not based on its appearance
InterpretationBox[display_, expr_]
where display will be shown in the output cell, instead of expr, keeping expr for the evaluation.
info
display can be any Wolfram Expression wrapped in MakeBoxes
danger
display must be Boxes, if you want to use regular WL expressions, consider Interpretation
tip
See more at Decorating symbols
Applications
One of the examples is to make some definitions shorter by setting UpValues to MakeBoxes, since the last one is recursively applied to everything in the output cell
AVeryLongFunction /: MakeBoxes[AVeryLongFunction, StandardForm] := InterpretationBox[MakeBoxes[Ashort, StandardForm], AVeryLongFunction]
Now we can check the result by
AVeryLongFunction
if one define also this
AVeryLongFunction[expr__] := SpecialList[expr]
You can use it with the created alias Ashort
An expression will not be revealed
Dev notes
This is a wrapper for ViewBox with a read-only EditorView inside.