Passing arguments to a JavaScript callback function

In JavaScript, callback functions are used to perform an action or operation after another operation has occurred. The mechanics of a callback rely on the fact that everything in JavaScript is a first class object. This fact allows you to pass functions as arguments to another function. The latter function can then invoke that function at a predetermined point in the program.

Enabling Quicksilver proxies and application menus | The Celsius1414 Journal

In Quicksilver To start, you’ll likely need to have “Enable Advanced Features” turned on in the latest-greatest version of Quicksilver. First, to enable proxies in QS preferences… Under Catalog > Quicksilver, turn on “Proxy Objects”, “Internal Commands”, and “Internal Objects”….