Most of our clients have moved into using what we have been calling "bingo" numbering for titles. This is where a detail (or section or plan title (not the sheet titleblock)) has a bubble with an alphanumeric which is dictated by the detail's location on the sheet. I can make a block that will use a field to show the blocks X,Y location, but I am trying to figure out how to make ACAD recognize that location as the grid defined by the client's border. Some sort of if/then based on the range of X,Y values that swaps out the numerical value for an alphanumeric?