Metadata automatic assignment

Automatic assignment of metadata by uploading data to tree nodes. 

Automatic assignment or modification of metadata with drag-and-drop operations in the tree view. 

An easier way to automatically assign metadata is to create or upload data directly to a folder by using the context menu. In this case, all the metadata underlying the folder are automatically added to the entry. This a major difference from conventional file systems If a file is moved from one folder to another, the information that this file once belonged to the original folder is lost. This might be intentional but is not in the most cases. With the described metadata concept, this information is inherent to the file and will only change or drop out on explicit action of the operator. 

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See also in sourсe #XX -- [ ]

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