Indentation

[Pilgrim]

I'm new to programming so take it easy on me :-)

I'm going through a book by Ivan Van Laningham and have gotten to
indentations.  In the example I'm trying duplicate he as written three lines
from the command prompt.  After the third line is a new indentation and then
the next line starts back at the beginning without the command prompt >>>
and starts with an "elif" statement.  According to his tip to start a new
line you just hit return twice when you are done with the indentation.  OK
that works fine and starts me at a new prompt >>> but when I type the next
line starting with a "elif" statement it gives me a SyntaxError: invalid
syntax.  What I'm I missing?

Thanks