running-window

Arguments: form

Returns (or sets with setf) the window which is the running version of the form   form, if such a window exists and is still open, and otherwise returns nil. A custom on-initialization function for a project may want to setf this value (along with the running-form of the window) when it runs a form, so that the IDE will know how to automatically close the running window if it is still open the next time the form is run. See the example in default-init-function.

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Created 2010.1.21.