A page can be designed to only work with certain screen resolution ratios. This is done by defining a minimum- and a maximum screen ratio (by entering two arbitrary values, width and height, which are used to calculate a ratio. 200 and 100 will have the same effect as 2000 and 1000).
If the screen resolution is within these limits, display the page as-is.
If, however, the screen resolution is too wide or too narrow (outside of the specified boundaries), an alternative page will be displayed instead.
This process functions recursively, meaning that multiple of these checks can happen in succession to find the proper page.
To disable this feature, enter 0 in all 4 fields, and clear the If out of bounds, go to-field.