DTP Tools, which makes plug-ins for Adobe InDesign and Quark Xpress, has announced Active Tables for InDesign, a powerful in-app spreadsheet editor. The plug-in allows users to create formulas and edit cells, rows and columns of imported spreadsheet data extensively without having to re-open any spreadsheet program to edit the source. The add-on enables clients to create accurate price quotes, automate invoice creation, localize marketing materials, incorporate time-limited discounts, create price lists or localize sales tax calculations.