Hi Matthias, all,
I've found the "Search and replace" feature by accident running Klayout in edit mode. This was quite useful to find some instances of given cells in an existing .gds, and browse from one to the next place.
Two suggestions of enhancements :
— make "search and replace" available for read-only mode, so that people can use to search without any risk of edition and so that more could find this feature by accident ;)
— create a "hierarchically below" option in the search part, to handle efficiently massive hierarchical layout (such as memory macro)
Thanks again for your great libre tool.