[ccp4bb] Pymol: Zoom without Mouse

[Raji Edayathumangalam]

How does one zoom into the molecule in Pymol without a mouse and with  
just the Mac trackpad and keyboard?

Have tried to look it up in the manual and on the web. No success  
finding it yet; I did figure it out once before but can't redo it now  
for the life of me. Need to know how to do it without the mouse.

Thanks,
Raji