[metapost] Size of arrow heads

[Oliver Buerschaper]

>> is it possible to influence the size of the arrow heads that are used
>> by the command drawarrow? If yes, how?
>
> Yes.  There are parameters that you can set for this purpose.  They  
> are
> called `ahlength' and `ahangle' and are documented in the manual.  In
> the version for the program version 1.005 from May of this year,  
> it's on
> page 43.

Just read it. Cheers!

Oliver