DICOM tags pane give ability for quick view of DICOM tags on current image.

There are three tabs:

Patient information tab - common DICOM tags for Patient, Study and Series

All Tags tab - all DICOM tags of current image

Favorite Tags tab - show only tags that are marked as favorite by the user

You can use Search field to find tags by specific text.

Clicking with the right mouse button on the list of All tags tab will show the context menu. 

Copy - copy all fields of the seleted tag to the clipboard

Copy All - copy all tags to the clipboard

Copy Value - copy value of the selected tag to the clipboard

Add to Favorite - add selected tag to the Favorite Tags pane

If you want to edit DICOM tags, read following topic: Edit DICOM tags