Changes

Value indexes can be created and dropped by the user. By default, the text and attribute index will be created, and all text and attribute nodes will be indexed. Three types of Four values indexes are available: a text, and attributeindex, and an optional token and full-text index. If a query is rewritten for index access, the message `applying ... index` will be added to the query info. The query info is output in the [[Graphical User Interface#Visualizations|Query Info]] panel in the GUI or via -V on [[Command-Line Options|command-line]].