The Excel module allows you to create projects from Excel files. Both xls and xlsx types are supported. Historically, Excel was used for creating and analyzing DSMs. Lattix supports the original MIT Excel format. However, Lattix also supports a columnar format for specifying data. The Columnar format is particularly useful for collecting data. Here is a short (2 minute) video on using Excel with Lattix: https://www.youtube.com/watch?v=pSQ0ZV-s3GM&t=