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Built-in Mathematica Symbol

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In

In[n]
is a global object that is assigned to have a delayed value of the n

input line.

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Typing In[n] causes the n input line to be re-evaluated.

In[] gives the last input line.

In[-k] gives the input k lines back.

EXAMPLES

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Basic Examples (2)

Reevaluate a command without retyping it:

See what commands have been entered in a session:

Get Information for In. Note that here this will only include definitions from this example:

In[7]:=

SEE ALSO

InString Out $Line $HistoryLength

TUTORIALS

Using Previous Results

Using a Text-Based Interface

Doing Computations in Notebooks

The Main Loop

Mathematica Sessions

MORE ABOUT

Tokens Related to the Cell Menu

Mathematica Session History

MathLink Packets

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