https://docs.dopus.com/ 2026-05-16T14:46:26+00:00 https://docs.dopus.com/ https://docs.dopus.com/lib/exe/fetch.php?media=logo.png text/html 2026-01-28T05:23:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.dopus.com/doku.php?id=basic_concepts:expandable_folders&rev=1769577826&do=diff You can expand individual folders in the file display just like you can in the folder tree. This lets you see the contents of sub-folders and copy files in and out of them without having to actually navigate to the folder in question. Enabling expandable folders text/html 2023-12-01T22:45:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.dopus.com/doku.php?id=basic_concepts:explorer_replacement&rev=1701470707&do=diff One of the key features of Directory Opus is its Explorer Replacement mode. To clarify exactly what we mean by Explorer Replacement: Whenever an action is taken that would ordinarily result in a File Explorer window opening, a Directory Opus window (Lister) will open instead. text/html 2023-12-09T21:34:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.dopus.com/doku.php?id=basic_concepts:flat_view&rev=1702157654&do=diff Flat View is a mode you can turn on in a Lister that enables you to view all the contents of a folder's sub-folders at once. In effect it collapses, or flattens, the display of a nested hierarchy of folders and files into a single folder. If you want to be able to control which folders are expanded, text/html 2023-12-08T05:33:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.dopus.com/doku.php?id=basic_concepts:folder_options&rev=1702013616&do=diff The Folder Format describes the appearance and presentation of the files currently displayed in the file display. It includes things like: * The view mode (icons, thumbnails, details, etc) * The information columns shown (in details and power mode) * text/html 2025-06-03T11:15:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.dopus.com/doku.php?id=basic_concepts:folder_sizes&rev=1748949347&do=diff Normally on Windows, only the size of files is easily visible - the (total) size of folders is not usually displayed. This is mainly because the file system does not keep track of the total size of a folder. Instead, displaying a size for a folder involves reading the contents of that folder (and all its sub-folders, recursively) and adding up the total size. text/html 2023-12-07T02:52:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.dopus.com/doku.php?id=basic_concepts:searching_and_filtering&rev=1701917542&do=diff While working in folders you will often encounter the situation where there are many more files displayed than the ones you actually want to work with. There are two main systems for reducing the number of files displayed to those you specifically want to target: text/html 2023-12-06T05:03:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.dopus.com/doku.php?id=basic_concepts:selecting_files&rev=1701838984&do=diff Whenever you want to do something with a file (copy it, delete it, or just view it) you must select it first. Most file operations in Directory Opus operate on all currently selected files (and folders), so it's important to know how to select files, and how to tell how many files you have selected. text/html 2023-12-08T05:31:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.dopus.com/doku.php?id=basic_concepts:sorting_and_grouping&rev=1702013493&do=diff You can control the order files and folders are displayed in several different ways. The primary way is by defining the sort order. A file list can be sorted by any column that is currently displayed. You can also use manual sorting to arbitrarily arrange the contents of your folders. text/html 2023-12-02T21:53:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.dopus.com/doku.php?id=basic_concepts:source_and_destination&rev=1701553996&do=diff Many functions in Opus use the concept of a "source" folder and a "destination" folder. Even if you're new to Opus you're probably already familiar with this concept without realising it - whenever you copy a file and paste it somewhere else, you are copying it text/html 2023-11-29T21:21:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.dopus.com/doku.php?id=basic_concepts:starting_opus&rev=1701292885&do=diff We recommend that you set Opus to start automatically when Windows starts, using the options in the Launching Opus / Startup page in Preferences. Opus is designed to stay running in the background, even when no windows are open. There are several advantages to this: * text/html 2024-02-25T20:08:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.dopus.com/doku.php?id=basic_concepts:the_lister&rev=1708891724&do=diff The main file manager window in Opus is called a "Lister".   The screenshot above shows a basic Lister with the default Opus configuration. It features three top toolbars, a folder tree on the left, and the file display on the right (with another toolbar above it.) The folder tree highlights the C: drive, whose contents are depicted to its right. Below the file display is the folder tab bar - currently, only one tab is open (the one showing C:) but you can open as many folders as you like each… text/html 2023-12-10T20:24:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.dopus.com/doku.php?id=basic_concepts:virtual_file_system&rev=1702239842&do=diff In general a file system is software provided by the operating system that manages files and folders on your disks. It keeps track of where on the physical disk the data that represents a file is stored, maintains a list of filenames and information about files, and generally provides all services relating to creating and accessing disk files.