Add info dir

Author: minad

dir

@@ -0,0 +1,18 @@
+This is the file .../info/dir, which contains the
+topmost node of the Info hierarchy, called (dir)Top.
+The first time you invoke Info you start off looking at this node.
+
+File: dir,	Node: Top	This is the top of the INFO tree
+
+  This (the Directory node) gives a menu of major topics.
+  Typing "q" exits, "H" lists all Info commands, "d" returns here,
+  "h" gives a primer for first-timers,
+  "mEmacs<Return>" visits the Emacs manual, etc.
+
+  In Emacs, you can click mouse button 2 on a menu item or cross reference
+  to select it.
+
+* Menu:
+
+Math
+* GNUPLOT: (gnuplot).           An Interactive Plotting Program