These days I'm learning "maple introductory programming guide". About the command 'anames()',there is an example illustrated in the picture. I know anames(alluser) yields all the user-assigned names,including names containing a leading underscore ('_').
But I don't know why it yields the word "index/fill", can you tell me the meaning of "index/fill" and why it should exist in the result?
Best regards!
