The document describes different file types used in the Plantgro software, including soil files, climate files, and plant files. It provides examples of the data contained in each file type, such as soil properties, climate averages, and plant growth relationships. The files use extensions to indicate the type of data stored, such as .SL for soil files and .CMV for climate average files. The plant files contain data on up to 23 relationships that characterize a plant species' growth.