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After the layout is saved, the respective view will be updated accordingly.
The user can also override the defaults.
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In each Xray table, you as a user can choose what information you want to display as columns and, therefore, overriding the project defaults. The layout will be saved in your user preferences.
Resetting the layout of the default columns
If you want to reset the columns configuration to the default values defined at the project level, click Restore Defaults.