A saved solution can be reloaded or shared using the Open/Share Solutions solutions dialog.
Each saved solution must have a name and a description. These fields are visible in the Open/Share Solutions dialog. A meaningful name and description can help you and your teammates move forward with the saved solution.
Saved solutions are stored as files with the extension ir_solution in the Foldit install directory. Solution files are mostly binary data, but the solution name and description appear in human-readable form near the top of each file.
See Open/Share Solutions for more on saved solutions.