Show grid

it seems strange to me that “show grid” only affects the current diagram. I would have expected it to toggle the grid for all diagrams.

do some people like to have the grid on certain types of diagrams and not others?

hi Ianxm
You can set the default value of show grid in Diagram Options.
To open the Application Options Dialog,
“Option” menu -> “Application Options”

The default value of "Show grid" is under the "Diagram" categary.
I hope it can help you.