If set to "after-current-tab", then new tabs are inserted after the current tab. If set to "end", then new tabs are appended to the end of the tab list.
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src/nautilus-file-operations.c:787
Englishlocalizers: opening parentheses to match the "th copy)" string
If set to true, then all Nautilus windows will be browser windows. This is how Nautilus used to behave before version 2.6, and some people prefer this behavior.
If set to true, then Nautilus will have a feature allowing you to delete a file immediately and in-place, instead of moving it to the trash. This feature can be dangerous, so use caution.
Speed tradeoff for when to show a preview of text file contents in the file's icon. If set to "always" then always show previews, even if the folder is on a remote server. If set to "local-only" then only show previews for local file systems. If set to "never" then never bother to read preview data.