We looked at the "data" features... to see the example patches, hit "pure documentation" and navigate to "7.stuff/data-structures/".

Some things I might have forgotten to say:

• If the window holding the data is called "fred", send the message, "; pd-fred sort" to sort the contents left to right.
• If any object in a window is deleted, pointers to any object in that window become invalid - you have to reset them.
• Drawing commands (drawcurve, filledcurve, drawpolygon, filledpolygon, plot, drawnumber) have to be in the same window as the "struct" they refer to.
  Here is Homework 1 due April 12.