This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)

Entering Greek Letters

click on use a button in a palette
\[Alpha]use a full name
Esc a Esc or Esc alpha Escuse a standard alias (shown below as Esc a Esc)
Esc \alpha Escuse a TeX alias
Esc α Escuse an HTML alias

Ways to enter Greek letters in a notebook.

Here is a palette for entering common Greek letters.
You can use Greek letters just like the ordinary letters that you type on your keyboard.
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There are several ways to enter Greek letters. This input uses full names.
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Commonly used Greek letters. TeX aliases are not listed explicitly.

Note that in Mathematica the letter stands for Pi. None of the other Greek letters have special meanings.
stands for Pi.
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You can use Greek letters either on their own or with other letters.
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The symbol is not related to the symbol .
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