- The most common program that uses a Trv file extension is the Topocad program. Topocad is used by people who are doing land surveys and is a CAD program, which means that it does computer assisted drawing. Topocad is made by the Traverse PC company.
- Trv files that come from the Topocad program generally contain digital information about an area of land. This means that they will have markings for the coordinates of the area (latitude and longitude) as well as information about altitude and land formations, which includes rises and dips. These files will also contain data about when the measurement was taken and who recorded the information, as well as any notes that they recorded outside of the drawing. Trv files that have been made using Topocad can only be opened with the Topocad program.
- Topocad is a CAD program that is specifically designed for land surveys. That means that it is designed for a surveyor who is diagramming a piece of land to create a visual representation using a portable computer. It is designed to have many of the features of a standard CAD program, but it also can import data from GPS devices. It was designed for ease of use and simplicity in drawing irregular surfaces.
- Another source of a Trv file is from the Track Record Viewer program. This is made by the Track Records Software company and it used to help manage payroll, keep track of bills, and perform the accounting for a small or medium sized business.
- A Trv file from the Track Record Viewing program, which is part of the Track Record DS software bundle, is generally a screenshot of the overall records. It contains information for the program as to where it can locate a particular spreadsheet or other data used in compiling records.
