Avoid an infinite loop if an unknown graphics attribute is used.


git-svn-id: svn+ssh://svnrepo/projects/tachyon/trunk@7664 561c3618-0fe6-0310-b5d6-fc65c73fee30
Only output to the user output to the current buffer.


git-svn-id: svn+ssh://svnrepo/projects/tachyon/trunk@7665 561c3618-0fe6-0310-b5d6-fc65c73fee30
Add a key control to return to the last seen buffer.


git-svn-id: svn+ssh://svnrepo/projects/tachyon/trunk@7666 561c3618-0fe6-0310-b5d6-fc65c73fee30