Squeak's file libraries (Directory, DirectoryEntry, FileStream, etc.) are sometimes very confusing to use. FileMan provides a simple, refactored interfaces for manipulating files and directories by wrapping those classes. "Before"subDir := FileDirectory default directoryNamed: 'subDir'.subDir assureExistence.[str := subDir newFileNamed: 'file1'.str nextPutAll: 'Hello!']ensure: [str close]. "After installation of FileMan"'./subDir' asDirectoryEntry at: 'file2' put: 'Hello!'