Dear experts,
         I would like to have some clarification about the meaning and use of the 
tags in the ODB under /History/Tags.

I noticed that, if a history plot is created, but the name of the corresponding 
variable is changed later and the plot is modified accordingly, the old name 
persists in the /History/Tags list along with the new one. So, it appears in the 
list of variables when a new history plot is created.

It seems not to compromise the functionalities of the history system, but it is 
prone to create confusion.

Is it the expected behavior? What is the correct procedure to follow if the name 
of a variable has to be changed?

Thank you,
     Francesco