A system for display of a three-dimensional computer assisted design, CAD, model of an arrangement of parts in virtual reality, the system comprising: a memory configured to store the three-dimensional CAD model of the arrangement of parts; a virtual reality headset configured to display a virtual environment to a user wearing the virtual reality headset , the virtual reality headset comprising a sensor for receiving a navigation input from the user for navigating the virtual environment; and a processor configured to generate a first view of the three-dimensional CAD model of the arrangement of parts resting on a first level of a three-dimensional space in the virtual environment; the system being characterized in that the processor is further configured to: generate a second view of a user selected part of the three-dimensional CAD model and metadata for the user selected part on a second level of the three-dimensional space, wherein a semi-transparent surface is located between the first and the second level; and transition a user view displayed in the virtual reality headset from the first view, through the semi-transparent surface , to the second view, wherein the second view includes the user selected part, the metadata for the user selected part, the semi-transparent surface and at least a part of the three-dimensional CAD model of the arrangement of parts on the first level. a memory configured to store the three-dimensional CAD model of the arrangement of parts; a virtual reality headset configured to display a virtual environment to a user wearing the virtual reality headset , the virtual reality headset comprising a sensor for receiving a navigation input from the user for navigating the virtual environment; and a processor configured to generate a first view of the three-dimensional CAD model of the arrangement of parts resting on a first level of a three-dimensional space in the virtual environment; the system being characterized in that the processor is further configured to: generate a second view of a user selected part of the three-dimensional CAD model and metadata for the user selected part on a second level of the three-dimensional space, wherein a semi-transparent surface is located between the first and the second level; and transition a user view displayed in the virtual reality headset from the first view, through the semi-transparent surface , to the second view, wherein the second view includes the user selected part, the metadata for the user selected part, the semi-transparent surface and at least a part of the three-dimensional CAD model of the arrangement of parts on the first level. generate a second view of a user selected part of the three-dimensional CAD model and metadata for the user selected part on a second level of the three-dimensional space, wherein a semi-transparent surface is located between the first and the second level; and transition a user view displayed in the virtual reality headset from the first view, through the semi-transparent surface , to the second view, wherein the second view includes the user selected part, the metadata for the user selected part, the semi-transparent surface and at least a part of the three-dimensional CAD model of the arrangement of parts on the first level. <EOS>