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# G Quirks and Unexpected Behaviour

There are some operations that may not behave in the way you may expect, although they are operating according to design. These are ``quirks'' rather than ``bugs''. Below is a list of quirks.

- When loading a file and ``Reset Intensity Upon File Load'' is disabled, the intensity range of the previous image will be used. However, the intensity range that is used is the raw range, not the scaled range. Thus, with images which have different scaling parameters, the scaled intensity range will change.
- When moving between two images (such as when blinking, or when loading a new image), the display system attempts to retain the old image parameters (i.e. zoom box). What is retained are the corners of the zoom box measured in image pixel co-ordinates, not world co-ordinates.
- Co-ordinate positions start from 0, not 1.