Prequest: 2.3 On-screen Editing

Use Open to select an input data file. A pop-up window appears with a scrollable list of the files in your current selected directory. Click on a file and then click OK to import the file. Alternatively, type the file name directly into the Directory and File boxes.
PreQuest automatically identifies the import file format. The current list of supported formats includes (see Section 4 for further details):
BCCAB: CCDC internal format
CIF: Crystallographic Information File
SHELX: Output from SHELX crystallographic solution programs
MOL: MDL MACCS Molfile
MOL2: Tripos Sybyl file