This ocaml library provides a set of needed and useful macros for developing. it is mainly used by the marionnet package. modules and functionality are the following :

- configuration_files: allow to get information from configuration files
- environments: environments are useful for maintaining the state, intendend
as a set of bindings, of a user interaction with a gui
- filenameextra: additional features for the standard module filename
- fix: poor man fix point operators
- hashm[m]ap: 2 module implementing polymorphic unbounded (multi) maps
- hashset: very simple module implementing a polymorphic unbounded sets
- identifier: build and manage unique (fresh) identifiers
- ledgrid: constants some global constant definitions, for fine-tuning
- listextra: additional features for the standard module list
- memo: module for building memoised functions
- oomarshal: object-oriented marshalling support
- preludeextra: "additional features" for the standard module pervasives
- shell: a collection of (mainly quick and easy) wrappers for the most
famous unix tools and generic unix commands or scripts
- strextra: additional features for the standard library str
- sugar: basic shortcuts and syntactic sugar
- sysextra: additional features for the standard module sys
- unixextra: additional features for the standard library unix
- widget: some generic tools for building guis
- wrapper: handling shell scripts in ocaml