I am trying to follow along some old notebooks written for older versions of Mathematica. I find that they have commands of the following type :
Error messages show up for these commands. I have attempted to just erase these commands. Sometimes it helps, but othertimes, errors show up at later points. I could prepare a list of the various commands and the error messages. Before doing that, I just want to be informed at a more general level about the changes in the later versions of Mathematica.
I would appreciate it if I can get help on the following points:
1. Is a call to load the packages needed only for "Standard Extra Packages" and any other external packages? Is there any reason why a call to packages like Graphics has been made unnecessary now?
2. Is it sufficient to remove the calls like << Graphics`Graphics3D` from old notebooks? Are there any associated commands that need to be edited? Is there any documentation on this? Are there any tools for updating automatically "old" notebooks?