This is a common dialog used in multiple applications created by Reporting Standard S.L.
What is a DTS?
A DTS is a Discoverable Taxonomy Set.
The idea is that an XBRL Report, XBRL Taxonomy or XBRL Linkbase points to other XBRL Taxonomy or XBRL Linkbase files (recursively) and the complete set of files required to fully understand the XBRL Report is called a DTS.
All files in a DTS makes an XBRL Report meaningful.
The DTS concept is defined in the XBRL 2.1 specification.
This dialog is used for opening an XBRL file or a set of XBRL files. An XBRL file is any of the following: XBRL Taxonomy Schemas (*.xsd), XBRL Linkbase files (*.xml) and XBRL Reports (*.xbrl). The extensions for the different file types are optional. The use of the ".xml" extension in XBRL reports is considered a bad practice. Reporting Standard tools recognizes the file type based on the file content. The file extension is not relevant for the XBRL processor.
This button is used in order to load files from the XBRL Catalog.
This button allows the user to load a local file form the file system. Loading a local file or a set of files from the file system is also supported by doing drag & drop from the windows explorer to the big white box in the Compose DTS dialog.
This button allows the user to indicate external files with the http: or ftp: protocols.
This button allows the user to open XBRL reports that are stored in the XBRL Database directly. There is no need to read any file from the Internet in this case.
This button is new since version 2.6.11
There is more information at the Add DB page on this wiki.
This button allows the user to remove a file from the list. The button changes from gray to normal caption when a file is selected in the list.
A commonly used set of files can be assigned to a name in order to facilitate the user to remember the files list based on a single name. Some tools like XBRLizer remembers the most recently opened files (or most recently opened list of files) using the name indicated here.
OK and Cancel
The last two buttons in the dialog are the common OK and Cancel buttons that allows the user to continue (OK) or to abort (Cancel) the current operation.