We recommend that you start with a diffraction pattern whose result is well known to you. If you are already familiar with the TReOr program you may decide to straightforward indexing, using the default parameters. In case you are a novice user you should swiftly go through the parameters and change settings only when they are obviously wrong. With the results obtained you may then turn to the more sophisticated parameters, e.g. Select Baseline Set The parameters are described in detail under general and TREOR-specific parameters 苏五长苏 玉 长 We recommend that you start with a diffraction pattern whose result is well known to you. If you are already familiar with the TREOR program you may decide to straightforward indexing , using the default parameters. In case you are a novice user you should swiftly go through the parameters and change settings only when they are obviously wrong. With the results obtained you may then turn to the more sophisticated parameters, e.g. Select Baseline Set. The parameters are described in detail under general and TREOR-specific parameters