"To determine the version of a Tekla model file without opening it, you can follow these steps: 1. **File Extension**: Check the file extension. Tekla Structures model files typically have the extension `.model`. 2. **Properties Dialog**: Right-click on the file in Windows Explorer and select "Properties". Look for the "Version" field in the Details tab, which may display the version number. 3. **Command Line**: Use the Command Prompt or PowerShell. Navigate to the directory containing the file and use the following command: ``` dir /x filename.model ``` Replace `filename.model` with the actual file name. This will display the version number in the output. 4. **Tekla Structures License Server**: If you have access to the Tekla Structures License Server, you can use the `lsadmin` command with the `-check` option to check the model file version: ``` lsadmin -check filename.model ``` 5. **TeklaScript**: If you have Tekla Structures installed, you can write a simple TeklaScript script to check the version of the model file. Here is an example script: ```tekla model filename.model print "Model Version: " + Model.ServerVersion ``` These methods should help you identify the version of a Tekla model file without opening it."