Instruction

How to edit the page:
 * 1) Sign in and Log in as a member
 * 2) Click at Edit button on the left upper corner of the page.
 * 3) In edit mode the buttons are:
 * Left group of button used for edition
 * "Link" use to create a link inside the wiki or outside by copy and paste the URL
 * "File" use to add image, audio file, etc.
 * "Widget" use to add or embed various kinds of web based media
 * "Comment" use to add comment of the page