where does ink come from?

where doth that ink come from is the important question. Where are we going to get that ink from. Remember InkOverLay and the baby InkCollector who can only collect (thats why they named them InkCollector). Thats where all the ink comes from..
all ink in the world, all ink ever comes from the overlay and the collector, the collector like tax collectors has less capability...
Ink Collection (and not on your desk blotter, on the Microsoft Windows Tablet PC Edition). Ink collection begins with the digitizer. A user places a pen on the digitizer and starts to write. the collection of ink data "flows" from the pen. You then use the InkCollector object to get the data that comes from the digitizer.
InkCollector Object
The InkCollector object captures ink input from available Tablet devices. The InkCollector object only collects ink and gestures that are input into a specific window. A very efficient event sink renders this input in real time. The InkCollector object captures the input and directs it into an Ink object.
-if you use two pens the ink may or may not flow those that really depends on the implementation of the entire input system, down to the driver level

Ink Collector mechanics
The InkCollector object attaches itself to a known application window. It then enables users to employ any available Tablet PC device (including the mouse) to lay down ink in real time on that window. The ink strokes that it collects are stored in an associated Ink object. These strokes can then be manipulated or sent to a recognizer for recognition. The InkCollector object also notifies the application when a cursor comes into range of any of the Tablet PC devices that are being used.There are of course more details but on a very high level thats what happens.

InkOverlay Object (The Mother of Ink creating objects.) aka "the overlay"
The InkCollector object, discussed above, is useful for applications to provide their own model for selecting, erasing, and other user interaction. The InkOverlay object is a superset of the InkCollector object that provides editing support. This is useful for applications to integrate ink drawing and editing into their own document canvas by using a set of standard ink selection models that the object provides.

Both the InkCollector object and the InkOverlay object (as well as the InkPicture control) use common constructs, such as the Ink object and the InkDrawingAttributes collection, so that the basic way to interact with ink is the same for all Objects.

InkOverlay is a COM object that is useful for annotation scenarios in which users are not concerned with performing recognition on ink but, instead, are interested in the size, shape, color, and position of the ink. It is well suited for taking notes and basic scribbling. The default user interface is a transparent rectangle with opaque ink. InkOverlay extends the InkCollector class in three ways:

• It raises events for begin-stroke, end-stroke, and ink attribute changes.
  
• It enables users to select, erase, and resize ink.
  
• It supports Cut, Copy, and Paste commands.
  

InkOverlay tactical mechanics:
3 basic steps are required to get an InkOverlay doing its thing - commonly called the CAT procedure for create, attache, true-it(set its Enabled property to true) . this is the same for InkCollector
CAT procedure

• Instantiate an InkOverlay object.
  
• Attach the hWnd property of an InkOverlay object to that of another window.
  
• Set the InkOverlay Enabled property to True.
  

The InkOverlay object includes basic printing support, but you must implement print preview or other advanced printing capabilities. InkOverlay persists ink in Ink Serialized Format (ISF) format.
...other interesting things about InkOverlay are the EditingMode property that determines what the pen does when it gets to the digitizer, the events (such as InkAdded, InkDeleted, and Stroke)
Hard to talk about this super inkers without talkingabout the
Drawing Attributes object
A DrawingAttributes object describes how any known set of ink is to be drawn. A DrawingAttributes object includes basic properties such as Color, Width, and PenTip. It can also encompass advanced parameters, such as variable transparency and Bezier smoothing, that can provide interesting effects or improve ink readability.

a little more ink from:
PenInputPanel Object
The PenInputPanel object allows you to easily add in-place pen input to your applications. The PenInputPanel is available as an attachable object that allows you to add Tablet PC Input Panel functionality to existing controls. The user interface is largely mandated by the current input language. You have the option of choosing the default input method for the pen input panel, either handwriting or keyboard. The end user can switch between input methods using buttons on the user interface.

and thus we now have the INK.....all the ink you see , any ink you can make and every ink there ever will be in in SDK 1.0 and 1.5 will have entered its existence from the above ways. The most versatile you might realize is the Overlay.

*note that Overlay is one word so the class name is Overlay not OverLay,

maybe i have been looking at this stuff for too long but it sounds like something that happens at a truck stop or something bad and unexpected like waylay, maybe thats what this thing is doing to linux
whats an overlay anyway
from dictionary.com
8 entries found for overlay
o ver lay1 ( P ) Pronunciation Key (vr-l)
tr.v. o ver laid, (-ld) o ver lay ing, o ver lays
To lay or spread over or on.

To cover the surface of with a decorative layer or design: overlay wood with silver.
To embellish superficially: a simple tune that was overlaid with ornate harmonies.
Printing. To put an overlay on.
To create (a new area code) having the same boundaries as another: In Maryland, area code 240 was overlaid on top of area code

am not sure , the API designer needs to tell us why the fuck he called it Overlay, i guess it covers a window?