### 16.5.1. File Format

If you elect to export the results file, which contains the solution to the final timestep, the format will be:

    filename.ext

where `.ext` is based on the format being written.

However, if you elect to export a different timestep, then the export file will have the following format:

    filename_t#.ext

where `#` is the value of the timestep exported.

Note: EnSight transient files will be sequentially numbered, regardless of the timestep value. For example, if timesteps of 1 s, 5 s, and 7 s are exported, they will have the filenames `filename_t1.ext`, `filename_t2.ext` and `filename_t3.ext`.

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