Boxes are the underlying representation of two-dimensional forms in notebooks.

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3
votes
1answer
30 views

Newline in code with MakeExpression

I start with f[x]. In boxes, this is RowBox[{"f", "[", "x", "]"}]. I apply ...
2
votes
1answer
75 views

Test whether the selection is a subexpression

I am writing a button that applies some transformation to the current selection, in a spirit similar to the question "Apply a function to the current selection in place". However, I would like to ...
4
votes
0answers
88 views

Using an external Pattern breaks Format

I noted while writing this answer that using an external Pattern on Format doesn't work: ...
3
votes
0answers
56 views

To UpSet or not to UpSet when using MakeBoxes

What is the difference between the following two: ...
1
vote
0answers
62 views

Redefined MakeExpression leads to error in interpreting

I’d like to have a TemplateBox that interprets as its content boxes: ...