Quickly Saving and changing Views

For years I have used some lsp code in my acad.lsp file to save and restore views to jump from place to place in a drawing typing V1 saves view 1 typing R1 restores view 1 and you can save upto 10 views 0 to 9. I just updated the code last week to also save a layer snapshot at the same type here is a capture of the original code.

here is the revised code and link to the code in a txt file