Contents Chapter 3: CFX-Pre File Menu | 3.2. Open Case Command | Print page 3.2.2. Opening Case (.cfx) FilesWhen opening an existing case file, CFX-Pre opens the case in the state in which it was last saved, including the mesh. « 3.2.1. Recover Original Session 3.2.3. Opening CFX-Solver Input (.def, .mdef), Results (.res), Transient (.trn) or Backup (.bak) Files »