The quantities of faces and rounds within a project will become large over the life of a project, making the use of filters essential to limit upload/download and calculation times.  Filters are very desirable for analysis of results for a specific area, time period, or other parameter.  STOPECALCTM employs filter dialogs to select faces and rounds.  Filters can be saved within a project for later, and/or repeated use.  Unless the user is creating a new face or round, the filter dialog is the only way to bring up a face, or faces to view, edit, calculate or report.