Is it possible to add +(Plus) for Zoom In and -(Minus) for Zoom Out to GoJs Diagram?

Hi Walter,
I have a requirement to add two buttons like + and -. if you click on + the diagram will be zoo-In and if - the diagram will be zoo-Out.
is it possible?

Can u please give reply for this post?

Just call CommandHandler.increaseZoom and CommandHandler.decreaseZoom on your diagram’s Diagram.commandHandler. http://gojs.net/latest/intro/commands.html

Regarding your second post, it’s 8 o’clock in the morning here in the eastern US. I just woke up.