I made up some new "destination" blocks that look like IEC safety ground symbols.
I set these up as destination style "6". (e.g. select style 6 when you insert the destination.)
I did NOT make up matching "source" symbols... I figure the standard arrows are good enough
What's the perceived advantage?
-its a smart symbol, the AE block is (unaccountably) dumb
Note I had to make four symbols, one for each "direction". Obviously the one with the wire coming into the ground from below is silly, but I think you need it to be consistent