[pstricks] ->>> and ->>>> arrows ?

[Christophe Jorssen]

Hello,

I'd like to have 3 and 4 arrows as defined in pstricks-add for ->>

I don't know how to modify the code

\@namedef{psas@>>}{%
    false \psk at arrowinset \psk at arrowlength \psk at arrowsize \tx at Arrow
    0 h a sub T
    gsave
    newpath
    false \psk at arrowinset \psk at arrowlength \psk at arrowsize \tx at Arrow
    CP
    grestore
    moveto
}

Somebody has a clue ?

Thanks

Christophe