Dataset - View All Elements

I have a dataset that contains about 40 elements. My notebook only shows about 16, then places a vertical ellipsis at the bottom, like this…

ScreenShot2015-01-06at15.26.05.png

How do I expand this to see the whole dataset?

I know this is an incredibly dumb question, but I cannot seem to find anywhere in the documentation that tells me.

Thanks in advance.

It is not in the documentation (therefore unsupported and subject to change). The variable Dataset`\$ElisionThreshold
does what you want. The attached notebook has examples.

PLEASE NOTE: Dataset`\$ElisionThreshold was added in Mathematica 10.0.2.

Quick example: with the default value

In[1]:= Dataset`$ElisionThreshold
Out[1]= 64

In[2]:= ExampleData[{"Dataset", "Titanic"}]

16 lines are printed. Lowering the value to 10 reduces the number of lines to three.

In[3]:= Dataset`$ElisionThreshold = 10;

In[4]:= ExampleData[{"Dataset", "Titanic"}]

Setting a higher number prints more rows. 144 would probably work for your example. It appears to set the number of elements included in the output.

p.s. It was not a dumb question.