As well as selecting files to perform operations on them, in details and power mode you can select individual cells (or whole columns) and copy their contents to the clipboard.
Cell selection is performed using the right mouse button with the Ctrl key held down:
Selected cells are highlighted in yellow by default. You can configure this color from the Directory Opus Colors Preferences page.
Once you have one or more cells selected, right click one of the selected cells without the Ctrl key held down. This displays the Copy Highlighted Cells context menu.
The commands on the context menu can be used to copy the highlighted data to the clipboard in various ways.
The context menu is configurable from the Customize / Context Menus tab. The standard context menu uses the Clipboard COPYCOLUMNS command to implement the various "copy to clipboard" functions, and the Select HIGHLIGHTCLEAR command to implement the "clear highlighted cells" command.
A script can use the Item.highlighted property to query any currently highlighted cells.