In a display of properties (or metadata) for multiple selected files, properties may be aggregated. Visual differentiation may be used to associate displayed aggregated values with one or more selected files to which the values pertain. Multi-value properties may also be aggregated and differentiated and/or accentuated. When aggregating multiple multi-value properties, steps may be taken to carry relative priority or positioning assigned by each of the selected files to which the multi-value properties pertain. Aggregated multi-value properties may include prompt text informing them of editing options, and users may edit properties by editing the displayed aggregated properties. Changes to the aggregated properties may be applied to the properties of the various selected files.