Hello, guys...I have a question about an idea I had... A long time ago I placed a cache (GC10AT0) that had the posted coordinates lead you to a marker where the cacher had to find elements within the marker to get the final cache coordinates. My question is this...is it permitted to utilize that same sign as a start point for another cache? I would use it like before, only this time the numbers attained would be used to create the call number to find the book cache within the library (which is next to said marker). If not, would it be okay to use the same marker as a starting point for the cacher to take the call number and go inside to find the cache? Thanks!