DisplayForm

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`DisplayForm`

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DisplayForm[expr]

prints with low-level boxes inside expr shown in explicit two-dimensional or other form.

Details

In ordinary StandardForm output, boxes such as SubscriptBox are shown literally. In DisplayForm they are shown as explicit two-dimensional constructs.
When an input evaluates to DisplayForm[expr], DisplayForm does not appear in the output. »

Examples

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Basic Examples (1)Summary of the most common use cases

Display a box expression as formatted:

In[1]:=1

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https://wolfram.com/xid/0j435imy-h6frkl

Out[1]=1

In[2]:=2

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https://wolfram.com/xid/0j435imy-fw9gf8

In[3]:=3

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https://wolfram.com/xid/0j435imy-g3iijq

Out[3]=3

Scope (5)Survey of the scope of standard use cases

Formatting for a row of elements:

In[1]:=1

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https://wolfram.com/xid/0j435imy-clgisg

Display nested boxes:

In[2]:=2

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https://wolfram.com/xid/0j435imy-f57bx2

A subscript and superscript as nested boxes:

In[1]:=1

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https://wolfram.com/xid/0j435imy-nvsbe

A subscript and superscript in a single box:

In[2]:=2

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https://wolfram.com/xid/0j435imy-ejvsin

Vector notation from an OverscriptBox:

In[1]:=1

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https://wolfram.com/xid/0j435imy-4r9iu

Symbolic sum displayed using an UnderoverscriptBox:

In[2]:=2

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https://wolfram.com/xid/0j435imy-ebho7j

Display a GridBox:

In[1]:=1

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https://wolfram.com/xid/0j435imy-fwjskh

In[2]:=2

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https://wolfram.com/xid/0j435imy-q5yto

Display with row and column lines:

In[3]:=3

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https://wolfram.com/xid/0j435imy-ceoasw

Add a frame:

In[4]:=4

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https://wolfram.com/xid/0j435imy-kf9s2o

Display using italic slant:

In[1]:=1

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https://wolfram.com/xid/0j435imy-djyti0

Display using Title cell style:

In[2]:=2

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https://wolfram.com/xid/0j435imy-mkh8yb

Properties & Relations (3)Properties of the function, and connections to other functions

Evaluate an expression:

In[1]:=1

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https://wolfram.com/xid/0j435imy-3uoo

Out[1]=1

Convert to boxes:

In[2]:=2

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https://wolfram.com/xid/0j435imy-czwypa

Out[2]=2

Display the boxes:

In[3]:=3

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https://wolfram.com/xid/0j435imy-iyxzf

Display an InterpretationBox:

In[1]:=1

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https://wolfram.com/xid/0j435imy-b4ov11

The box is interpreted as the second argument:

In[2]:=2

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https://wolfram.com/xid/0j435imy-j6ylmq

Out[2]=2

When an input evaluates to DisplayForm[expr], DisplayForm does not appear in the output:

In[1]:=1

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https://wolfram.com/xid/0j435imy-4kws7n

Out is assigned the value RowBox[{"2","+","2"}], not DisplayForm[RowBox[{"2","+","2"}]]:

In[2]:=2

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https://wolfram.com/xid/0j435imy-0x4hkl

Out[2]=2

Possible Issues (1)Common pitfalls and unexpected behavior

Even when an output omits DisplayForm from the top level, it is not stripped from subexpressions:

In[5]:=5

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https://wolfram.com/xid/0j435imy-jag3z5

The output does not have DisplayForm in it:

In[6]:=6

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https://wolfram.com/xid/0j435imy-27k1mk

Out[6]=6

However, the variable e does have DisplayForm in it, which may affect subsequent evaluations:

In[7]:=7

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https://wolfram.com/xid/0j435imy-owp0j6

The MakeExpression gives an error due to the intervening DisplayForm:

In[8]:=8

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https://wolfram.com/xid/0j435imy-imazf2

Out[8]=8

Assign variables first and then apply DisplayForm to the result to maintain computability:

In[9]:=9

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https://wolfram.com/xid/0j435imy-hhu0sx

In[10]:=10

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https://wolfram.com/xid/0j435imy-8946qd

Out[10]=10

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