.icp, infra-CONVERT Project: This infra-CONVERT file format can be re-opened later for work on stamped drawings.
.prf, infra-CONVERT Quality control plan: This is the quality control plan file format in infra-CONVERT. The data strings are tab-separated ACII files. This file format is used for importing into CAQ systems.
.dfd, Q-DAS® ASCII transfer format: This file format is used for transferring data into Q-DAS® software.
.csv, comma-separated values: This data format is used for importing into Excel or other spreadsheet calculation programmes.