File Menu

• Open...: (⌘O) 'FoldIt (light)' can read directly any protein coordinate text file from the Brookhaven Protein Data Bank (PDB) (Bernstein, F.C., Koetzle, T.F., Williams, G.J.B., Meyer, E.F.Jr, Brice, M.D., Rodgers, J.R., Kennard, O., Shimanoughi, T., & Tasumi, M. (1977) J.Mol.Biol. 112, 535-542) including hetero-atoms and water molecules. This implies that files have a TEXT format and that their names are ended by one of the suffixes '.PDB', '.pdb' or '.ent' (e.g. 1CRN.PDB, pdb1crn.ent). Normally these TEXT files begin with the word 'HEADER'. If they don't they will still be read (at a somewhat slower speed). In all cases, the program recognizes only the PDB nomenclature. FoldIt can save any structures in their own binary formats (suffix '.FIT') which are of course much faster to read and contain the complete hydrogen-bonding pattern of the protein.
Only files complying to the choice made in the dialog Utilities/File Filter Settings... are visible. To access all files, keep the OptionKey down while selecting the Open... menu item.
Holding the OptionKey down while opening a file displays a dialog to read only part of that file or only selected residues.
To read a second structure into memory while keeping the one which has just been read, hold down the Control key while selecting the second file.
• Close ED-map...: Close the electron density map in memory (only one map can be read in memory at a time). Feature not available on all versions.
• Delete...: Delete a file.
• Reset FoldIt (light): Delete current structure from memory and reset all windows.
• Save: Save the changes applied to an already existing '.FIT' file.
• Save As...: 
  * Report...: Save text content of Report window on disk.
  * Picture...: Save front window picture (the Image window, or any of the utility windows providing they contain PICT information) on disk; 
  * Picture Set: Save content of ALL histogram windows in a single PICT file on disk. This item is activated for .RamW, .HbdW, .AroundW, .SeqW, .StatW & .StructW type windows.
  * .FIT...: Save the current structure into a binary file. If 2 structures are in memory, a dual file (containing both structures) will be created.
  * .PDB..., .ent...: Save the current structure into a text file (usual PDB format) which name terminates by one of the suffixes '.PDB', '.pdb' or '.ent'. Only the coordinates of the displayed atoms are stored. It is thus possible to create 'main-chain-only' files or 'backbone-only' files.
  * .SEQ...: Save only the current sequence into a text file. If 2 structures are in memory, a dual file (containing both structures) will be created.
  * .EDMFIT...: Save the current electron density map (text) into a binary file. Feature not available on all versions.
  * .RamW...: Save the current RamW in a file which will be recognized by 'FoldIt (light)'.
  * .SSbdW...: Save the current SSbdW in a file which will be recognized by 'FoldIt (light)'.
  * .HbdW...: Save the current HbdW in a file which will be recognized by 'FoldIt (light)'.
  * .StatW...: Save the current StatW set in a file which will be recognized by 'FoldIt (light)'.
  * .AroundW...: Save the current AroundW set in a file which will be recognized by 'FoldIt (light)'.
  * .MotivW...: Save the current MotivW set in a file which will be recognized by 'FoldIt (light)'.
  * .StructW...: Save the current StructW in a file which will be recognized by 'FoldIt (light)'. If several StructWs exist, the whole set is saved in a single file. If the OptionKey is down, only the frontmost StructW will be saved.
  * .Anim...: Save the current animation in a file which will be recognized by 'FoldIt (light)'.
• Pause: Pause lengthly batch procedures to momentarily direct CPU time towards other running applications. 
• Abort: (⌘.) Abort user requested operations (To abort a structure motion, just press any key or click the mouse). 
• Quit (⌘Q).