You can move nodes within the concept taxonomy, each indentation indicates the level of a concept within the hierarchy, as with folders and sub-folders.
To modify a concept taxonomy hierarchy:
Add - add a new node at the selected
position
Edit - edit the selected node
Delete - delete the
selected node
Promote - move the
selected node up one level in the hierarchy
Demote - move the
selected node down one level in the hierarchy
Move Up - move the
selected node up one
Move Down - move the
selected node down one