The following section lists the File folio calls. See Kernel Folio Calls in the 3DO System Programmer's Reference for a complete description of the calls.

• CloseDiskFile() Closes a file.
• CreateAlias() Creates an alias for a file.
• CreateFile() Creates a file.
• DeleteFile() Deletes a file.
• OpenDiskFile()Opens a disk file.
• OpenDiskFileInDir()Opens a disk file contained in a specific directory.

• ExecuteAsSubroutine() Executes previously loaded code as a subroutine.
• ExecuteAsThread() Executes previously loaded code as a thread.
• LoadProgram()Launches a program.
• LoadProgramPrio()Launches a program and gives it a priority.
• LoadCode() Loads a binary image into memory, and obtains a handle to it.
• UnloadCode() Unloads a binary image previously loaded with LoadCode().

• ChangeDirectory()Changes the current directory.
• CloseDirectory()Closes a directory.
• GetDirectory()Gets the item number and pathname for the current directory.
• OpenDirectoryPath()Opens a directory specified by a pathname.
• OpenDirectoryItem()Opens a directory.
• ReadDirectory()Reads the next entry from a directory.

• OpenDiskStream()Opens a disk stream for byte stream-oriented I/O.
• CloseDiskStream()Closes a disk stream.
• ReadDiskStream() Reads from a disk stream.
• SeekDiskStream()Performs a seek operation on a disk stream.