O$: Instance memory footprint

[Olafur Gardarsson]

When say a window is instantiated, does it pull into memory a copy of all
the task variables or does it refer to the task variables where they are
already in memory by way of the task instance? I'm asking because in a
project I'm working on I noticed that objects had been set up to instantiate
as task variables. This makes life easier when using methods in these
objects but I'm wondering if every instance of every object is carrying
around the extra weight of objects they never use.

Oli