What length does '1024**2' signify in GAE Search API TextField docs?

Question

I'm planning to use GAE's Search API for some fulltext string indexing but am unsure of what something in the documentation means:

Text Field: A string with maximum length 1024**2 characters.

Answer 1

It's Python syntax for 1024 squared. Documentation:

[the operator] yields its left argument raised to the power of its right argument.