What does [...] mean?

[Charles Hixson]

I'm getting a list that I build which when printed is displaying, well, 
e.g.:
d = << ['electronic', 'path', 'open', 'for', 'the', 'next', 'reader', 
'.', [...], 'Do', 'not', 'remove', 'thi', '.', [...]] >>

Clearly I have a problem with the truncation of the final this, but what 
does the internal [...] mean?
It's generated by doing:
print "d = <<", d, ">>"

If it matters, I'm using Python 2.3.4 on Linux.