post_menu,   unpost_menu   -  write  or  erase  menus  from  associated


   #include <menu.h>
   int post_menu(MENU *menu);
   int unpost_menu(MENU *menu);


   The function post_menu displays a menu to its associated subwindow.  To
   trigger  physical  display  of  the  subwindow,  use  refresh  or  some
   equivalent curses routine (the implicit doupdate triggered by an curses
   input  request  will  do). post_menu resets the selection status of all

   The function unpost_menu erases menu from its associated subwindow.


   These routines return one of the following:

   E_OK The routine succeeded.

        System error occurred (see errno).

        Routine detected an incorrect or out-of-range argument.

        The menu has already been posted.

        Routine was called from an initialization or termination function.

        Menu is too large for its  window.  You  should  consider  to  use
        set_menu_format() to solve the problem.

        The menu has not been posted.

        No items are connected to the menu.


   ncurses(3NCURSES), menu(3MENU).


   The  header  file  <menu.h>  automatically  includes  the  header  file


   These routines emulate the  System  V  menu  library.   They  were  not
   supported on Version 7 or BSD versions.


   Juergen Pfeifer.  Manual pages and adaptation for new curses by Eric S.



Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.

Free Software

Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.

Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.

Free Books

The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.

Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.


Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.

Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.