To start with 7th You have to download the 7th IDE first. This is a file called Seventh.jar.
On Your computer JavaTM from Oracle (formerly Sun Microsystems) must be installed. Normally each computer comes pre-installed with Java. If You have an older version than Version 7 or no Java installed, use the button on the right.
You launch the the 7th IDE by double clicking the Seventh.jar icon or from the command shell window with java -jar Seventh.jar . Now two overlapping blank windows should pop up.
For programmers only:
Make the Seventh.jar file available to Your program by inserting it into Your .jar file on a jar-in-jar basis. For the Eclipse development system You must do the following:
Insert the Seventh.jar file to Your project. Create a new directory named lib (if it does't already exists) in Your projects directory. It should be now in the same directory with src and bin. To make the Seventh.jar file known to Your project select in the menu Project – Properties – Java Build Path. On the Tab Libraries use Add External JARs and add the Seventh.jar file. Then go in the menu to File – Export – Runnable Jar File. Eclipse's Runnable Jar Export Wizard inserts the Seventh.jar file and some more class files beginning with something like org/eclipse/jdt/internal/jarinjarloader/Rsrc… automaticly to Your Projects jar file. That makes the 7th stuff accessible from within Your program.