How do I add parameters to programs launched from Lubuntu's Application Launch Bar?

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http://askubuntu.com – I've just started trying out Lubuntu 12.04. I know I can edit ~/.config/openbox/lubuntu-rc.xml to assign keyboard shortcuts to open programs with certain parameters. For example, I can specify that ctrl + alt + T opens lxterminal with a certain size like this: <!-- Launch a terminal on Ctrl + Alt + T--> <keybind key="C-A-T"> <action name="Execute"> <command>lxterminal --geometry=148x30</command> </action> </keybind> But how do I do the same thing for lxterminal when started by clicking on its icon in my Application Launch Bar? In other wo (HowTos)