Identify some poetic techinques Emily Dickinson uses in "Tell all the Truth but tell it slant."

First of all, the title to Emily Dickinson's poem, "Tell
all the Truth but tell it slant," draws the reader's attention to the word "Truth,"
capitalized in the title. So the focus of the poem is on some essence of the truth.
However, where Dickinson generally is straightforward in her ideas of appropriate social
and moral behavior, in this instance, she demonstrates a deep insight into the nature of
human beings. Unpleasantness is not sometime people enjoy. She does not support lying,
but simply appeals to the reader to use a kinder approach in
delivering the "Truth."

In essence,
Dickinson relays our attention to how we tell the truth. We can
throw it in someone's face or tell it on the "slant," coming through the back door
rather than charging in the front. This makes the truth easier to
take.

Imagery used is found in references to light: the
Truth must dazzle, or every man be blind.
These words are chosen to allow the reader to understand that the Truth is bound in
light, something to be desired. However, sometimes the truth can be debilitating when
presented too abruptly. The imagery here also compares the dazzling light which enchants
us, as opposed the blinding light that hinders or damages
us.

A metaphor used is found in referring to the delivery
of truth as a planned activity: it is presented in a concrete terms rather than in
abstracts. The metaphorical comparison is found in telling the Truth with a slant (in an
indirect or circuitous way) in the same way lightening is described to children so they
will not be afraid.