Reference to other sequence diagram in a sequence diagram

Hello,

I have a multiple seq diagrams in some of those diagrams i need to call other seq diagrams.

It is better to divide some diagrams in smaller ones because they can get big.

My question is: How can I referer to a other seq diagram in my diagram?

Greetings,
Sjaakmans

See this topic:
http://forums.visual-paradigm.com/posts/list/279929.html