Scratch variables in GUI

[John Darrington]

I've noticed that scratch variables are being displayed in the GUI.
That in itself is a problem which I need to fix.

But I was intrigued that they seem to retain the same values that they
were originally assigned, and appear to have space in the datasheet
allocated.   I thought that scratch variables were reset at the start
of each case, and I didn't expect a case source to actually allocate
storage for them.

Is this an opportunity for optimisation that we've overlooked?

J'

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