oriented line with symbols

[luca marletta]

Hi list,
I need to draw a line with orientation.
I'm doing it with a TRUETYPE symbols ">" and it works but I cannot get
the way my shape  line gets oriented.
I thought the rule was from lower vertex to higher in the line but it
doesn't respect this rule and so what it the real one?
How can I keep control of orientation drawing a shape line?

could someone help me please?

thanks a lot

Luca

-- 
luca marletta