Button for running program?

Hello...


Is there some way to run some program (gcode) with click on the button from AXIS?
As I read documentation I found that buttons can togle some pins. Is it possible to run program?

Thanks

www.linuxcnc.org/component/option,com_ku...d,1711/lang,english/
www.linuxcnc.org/component/option,com_ku...4/lang,english/#2009

Not right think.

I meant to load and execute some program. For example to make some special homming or to find hole center or to check if edge of stock is straight... ...
I know that I can make pyVcp and have buttons. But I can't manage how to run stuff...
eg if I click SpecialHoming button to execute "o<specialHoming>sub"
if I click Hole center to execute "o<holeCenter>sub

Thanks