+Planck: Parser LANguage Combinator Kit
+Planck version 2.1.0, what you require are:
+The followings are required for building an ocaml parser using Planck
+* pa_monad_custom -- from http://bitbucket.org/camlspotter/pa_monad_custom/
+* ocaml 3.12.0 source code tree, compiled, and its toplevel directory is symlinked as `ocaml/ocaml' in this directory. I mean, cat ocaml/ocaml/VERSION must show you a text "3.12.1...".
+* (optional) lablgtk-2.14.2 source code for test parsing of oo codes. Its toplevel directory must be symlinked as `lablgtk-2.14.2' in this directory.
+If you are not interesting in preparing these things for the ocaml parser, edit around the last line of OMakefile.
+2. yes no | omake --install
+* Result : Result monad. Haskell's Either monad, but I hate the names.
+* Position : Module for locations like bytes, lines and columns of inputs.
+* Lazylist : Used for implementing parse target streams
+* Stream_intf : Module type declarations for streams.
+* Stream : Basic stream operations
+* Sstring : Stream of strings (Not chars)
+* Sbuffer : Stream specialized for chars with efficient buffering
+* Smemo : Stream with memoization by stream positions
+* Planck_intf : Module type declarations for parser combinators
+* Pbase : Base parser combinators
+* Pchar : Parser combinators specialized for char stream
+* Pbuffer : Parser combinators specialized for Sbuffer
+* Op_prec : Operator precedence resolution
+* expr : This is a small calculator. It contains:
+ * binary operator precedence resolution
+ * manual removal of left recursion rules
+ To test its parsing and calculation correctness, cd test; omake test .