.synergy.conf

section: screens
  desktop:
  laptop:
end

section: aliases
  desktop:
    Williams-Mac-Pro.local
  laptop:
    will.local
end

section: links
  desktop:
    left = laptop
    right = laptop
  laptop:
    left = desktop
    right = desktop
end

section: options
  keystroke(f4) = switchInDirection(right)
end

nice