Structural Elements and Keyboard Characters

full name
alias
\[InvisibleComma]Esc,Esc
\[InvisibleApplication]Esc@Esc
\[InvisibleSpace]EscisEsc
ImplicitPlus\[ImplicitPlus]Esc+Esc
full name
alias
AlignmentMarker\[AlignmentMarker]EscamEsc
\[NoBreak]EscnbEsc
\[Null]EscnullEsc

Invisible characters.

In the input there is an invisible comma between the and .
In[1]:=
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Out[1]=
Here there is an invisible space between the and , interpreted as multiplication.
In[2]:=
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Out[2]//FullForm=
\[Null] does not display, but can take modifications such as superscripts.
In[3]:=
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Out[3]=
The \[AlignmentMarker] does not display, but shows how to line up the elements of the column.
In[4]:=
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Out[4]//DisplayForm=
The \[ImplicitPlus] operator is used as a hidden plus sign in mixed fractions.
In[5]:=
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Out[5]=

Spacing and newline characters.

form
full name
alias
\[SelectionPlaceholder]EscsplEsc
form
full name
alias
\[Placeholder]EscplEsc

Characters used in buttons.

In the buttons in a palette, you often want to set up a template with placeholders to indicate where expressions should be inserted. \[SelectionPlaceholder] marks the position where an expression that is currently selected should be inserted when the contents of the button are pasted. \[Placeholder] marks other positions where subsequent expressions can be inserted. The Tab key will take you from one such position to the next.

form
full name
alias
\[SpaceIndicator]EscspaceEsc
\[ReturnIndicator]EscretEsc
\[ReturnKey]EscretEsc
\[EnterKey]EscentEsc
\[EscapeKey]EscescEsc
Esc\[AliasIndicator]EscescEsc
form
full name
alias
\[RoundSpaceIndicator]
\[ControlKey]EscctrlEsc
\[CommandKey]EsccmdEsc
\[LeftModified]Esc[Esc
\[RightModified]Esc]Esc
\[CloverLeaf]EscclEsc

Representations of keys on a keyboard.

In describing how to enter input into Mathematica, it is sometimes useful to give explicit representations for keys you should press. You can do this using characters like and . Note that and are actually treated as spacing characters by Mathematica.

This string shows how to type .
In[6]:=
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Out[6]=

Characters generated in Mathematica output.

Mathematica uses a \[Continuation] character to indicate that the number continues onto the next line.
In[7]:=
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Out[7]=

Raw keyboard characters.

The fonts that are distributed with Mathematica contain their own renderings of many ordinary keyboard characters. The reason for this is that standard system fonts often do not contain appropriate renderings. For example, and are often drawn small and above the centerline, while for clarity in Mathematica they must be drawn larger and centered on the centerline.

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