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-Pd release 0.23 and onward include objects for managing lists of data.  The
-objects allow you to describe data structures and how they are viewed
-("template objects") and to traverse lists ("traversal objects.")
-
-The rest of this file gives a highly condensed summary of what's there; the 
-patches, starting with "1.scalars.pd", act as a tutorial.
-
-1. TEMPLATE OBJECTS.
-
-templates describe data structures.  You can add an item to a data structure
-using "field" or ask for a shape to be drawn using a "display command."
-
-1.1. "template" -- data structure.
-
-usage, "template <field1> <field2> ..."
-
-where the fields are either "float <name>", "symbol <name>", "list <name>"
-(don't try that yet); or "array <name> <template-for-elements>.
-
-1.2.  DISPLAY COMMANDS.
-
-
-These are objects which ask Pd to draw a shape corresponding to some fields
-of the datum.
-
-1.2.1.  POLYGONS and CURVES.
-
-polygons:   	 polygon <outline-color> <line-width> <x, y> ...
-filled polygons: fpolygon <fill-color> <outline-color> <line-width> <x, y> ...
-curves:   	 curve <outline-color> <line-width> <x, y> ...
-filled curves:   fcurve <fill-color> <outline-color> <line-width> <x, y> ...
-
-Each argument can either be a number or a symbol.  If a symbol, it's the
-name of a field (which must be a "float) which specifies the vaiue.
-So for instance in the "1.scalar.pd" example, in the template "template1",
-the object "fpolygon 244 q 5 0 0 20 z 40 0" draws a filled polygon whose
-interior color is 244 (red 2, green 4, blue 4) but whose outline color
-depends on the value of the field "q".  Its coordinates describe a triangle
-whose altitude is given by "z."
-
-1.2.2  PLOT.
-
-The "plot" objects plots an array field as shown in 5_array.pd.
-
-2.  TRAVERSAL.
-
-In this release of Pd, you can only traverse lists all of whose elements 
-belong to the same template; this restriction will be relaxed in a future
-release.  You "traverse" a list either to build it, to get its elements,
-or to change their values.
-
-2.1.  POINTER.
-
-The "pointer" object can be used to refer to an element of a list.  Its
-methods are:
-
-2.1.1.  traverse <symbol>.
-
-Point to the "head" of a list.  The symbol should match the name of a Pd
-window holding the list.  The pointer is output, but you can't set or get the
-fields of the "head" pointer; you can only get the "next" element or "append"
-to the list.
-
-2.1.2.  next.  Goes to the next element of the list.  Either the pointer
-is output on the left side, or else a "bang" at right tells you that no
-more objects are forthcoming.
-
-2.1.3.  bang.
-outputs the current pointer.
-
-2.2.  APPEND.  Adds an element of the specified template to the list.  You
-specify what fields you want to supply and the last inlet takes a pointer to
-the element you want to "append" after.
-
-2.3.  GET.
-
-    get <template> <field...>
-    
-send it a pointer to an object belonging to the <template> and it outputs
-the (floating-point) fields.
-
-2.4.  SET.
-
-    set <template> <field...>
-    
-send it a pointer (at the rightmost inlet) and values for the specified
-fields, and their values are changed accordingly.
-
-2.5.  GETSIZE.
-
-    getsize <template> <array-field>
-    
-outputs the size of the named field, which must be an array, when it receives
-a pointer to the owner as input.
-
-2.6.  SETSIZE.
-
-    setsize <template> <array-field>
-    
-Send it a pointer to the owner (right inlet) and then the desired size
-(left inlet) and the array is resized.  If a template contains an array,
-each scalar belonging to the template can have its own size for the array.
-
-2.7. ELEMENT.
-
-    element <template> <array-field>
-
-Pass it an index and a pointer and it outputs a pointer to an element of the
-array.
-
-
-
-