I have to work on lots of drawings with bad CAD practices, especially where Blocks are concerned. They created a Block on "whatever" layer(instead of "zero") they were working on, or maybe someone else created it years ago, & now it has been inserted into a new drawing on a different layer.
Is there a way to quickly find this single block, with unknown name,in the drawing? I can't find the Block, Merge or Purge the layer on which it was created.