Compare Files with Load Default Option From the Compare Time History tool, click Load Defaults. Use the file browser to find the required DEF file. Below are sample DEF files. Figure 1. Sample DEF file 1: Model file or result files may or may not be mentioned. For comparisons, plot files are mandatory. Figure 2. Sample DEF file 2: If Result-type mentioned is All, the tool compares all the result types with the respective result requests and result components. Figure 3. Sample def file 3: This sample DEF file compares multiple comparison files with one reference file.