ChangeDirectory Change directory
CreateDirectory Create a directory
DirectoryExists Determine if a named directory exists
FileClose Close a file
FileCopy Copy a file
FileDelete Delete a file
FileExists Determine whether a file exists
FileLength Obtain the length of a file
FileMove Move a file
FileOpen Open a file
FileRead Read a file
FileSeek Seek to a position in a file
FileWrite Write to a file.
GetCurrentDirectory Get the name of the current directory
GetFileOpenName Display Open File dialog.
GetFileSaveName Display Save File dialog.
RemoveDirectory Remove a directory