The abstract protocol for most display primitives that are used by Views for presenting information on the screen.

	display box access
	boundingBox center computeBoundingBox initialExtent

	displaying-Display
	display follow:while: follow:while:bitsBehind:startingLoc: isTransparent slideFrom:to:nSteps: slideFrom:to:nSteps:delay: slideFrom:to:nSteps:delay:andStay: slideWithFirstFrom:to:nSteps:delay:

displaying-generic

displayAt: displayOn: displayOn:at: displayOn:at:clippingBox: displayOn:at:clippingBox:rule:fillColor: displayOn:at:rule: displayOn:transformation:clippingBox: displayOn:transformation:clippingBox:align:with: displayOn:transformation:clippingBox:align:with:rule:fillColor: displayOn:transformation:clippingBox:fixedPoint: displayOn:transformation:clippingBox:rule:fillColor: displayOnPort: displayOnPort:at:rule: followCursor

	fileIn/Out
	writeOnFileNamed: writeUncompressedOnFileNamed:

	transforming
	align:with: scaleBy: translateBy:

	truncation and round off
	rounded

	accessing	top
	extent Answer the point that represents the width and height of the receiver's bounding box.
	height Answer the number that represents the height of the receiver's bounding box.
	offset Answer the amount by which the receiver should be offset when it is displayed or its position is tested.
	offset: Set the amount by which the receiver's position is offset.
	relativeRectangle Answer a Rectangle whose top left corner is the receiver's offset position and whose width and height are the same as the receiver.
	width Answer the number that represents the width of the receiver's bounding box.

	display box access	top
	boundingBox Answer the rectangular area that represents the boundaries of the receiver's space of information.
	center
	computeBoundingBox Answer the rectangular area that represents the boundaries of the receiver's area for displaying information. This is the primitive for computing the area if it is not already known.
	initialExtent Included here for when a FormView is being opened as a window. (4@4) covers border widths.

	displaying-Display	top
	display Display the receiver on the Display at location 0,0.
	follow:while: Move an image around on the Display. Restore the background continuously without causing flashing. The argument, locationBlock, supplies each new location, and the argument, durationBlock, supplies true to continue, and then false to stop. 8/20/96 sw: call follow:while:bitsBehind: to do the real work. Note that th method now returns the final bits behind as method value.
	follow:while:bitsBehind:startingLoc: Move an image around on the Display. Restore the background continuously without causing flashing. The argument, locationBlock, supplies each new location, and the argument, durationBlock, supplies true to continue or false to stop. This variant takes the bitsBehind as an input argument, and returns the final saved saved bits as method value.
	isTransparent
	slideFrom:to:nSteps: does not display at the first point, but does at the last
	slideFrom:to:nSteps:delay: Slide this object across the display over the given number of steps, pausing for the given number of milliseconds after each step.
	slideFrom:to:nSteps:delay:andStay: Does not display at the first point, but does at the last. Moreover, if stayAtEnd is true, it leaves the dragged image at the stopPoint
	slideWithFirstFrom:to:nSteps:delay: Slide this object across the display over the given number of steps, pausing for the given number of milliseconds after each step.

	displaying-generic	top
	displayAt: Display the receiver located at aDisplayPoint with default settings for the displayMedium, rule and halftone.
	displayOn: Simple default display in order to see the receiver in the upper left corner of screen.
	displayOn:at: Display the receiver located at aDisplayPoint with default settings for rule and halftone.
	displayOn:at:clippingBox: Display the receiver located at aDisplayPoint with default settings for rule and halftone. Information to be displayed must be confined to the area that intersects with clipRectangle.
	displayOn:at:clippingBox:rule:fillColor: This is the basic display primitive for graphic display objects. Display the receiver located at aDisplayPoint with rule, ruleInteger, and mask, aForm. Information to be displayed must be confined to the area that intersects with clipRectangle.
	displayOn:at:rule: Display the receiver located at aPoint with default setting for the halftone and clippingBox.
	displayOn:transformation:clippingBox: Display primitive for the receiver where a DisplayTransformation is provided as an argument. Alignment is defaulted to the receiver's rectangle. Information to be displayed must be confined to the area that intersects with clipRectangle.
	displayOn:transformation:clippingBox:align:with: Display primitive where a DisplayTransformation is provided as an argument, rule is over and mask is Form black. Information to be displayed must be confined to the area that intersects with clipRectangle.
	displayOn:transformation:clippingBox:align:with:rule:fillColor: Display the receiver where a DisplayTransformation is provided as an argument, rule is ruleInteger and mask is aForm. Translate by relativePoint-alignmentPoint. Information to be displayed must be confined to the area that intersects with clipRectangle.
	displayOn:transformation:clippingBox:fixedPoint: Display the receiver where a DisplayTransformation is provided as an argument, rule is over and mask is Form black. No translation. Information to be displayed must be confined to the area that intersects with clipRectangle.
	displayOn:transformation:clippingBox:rule:fillColor: Display the receiver where a DisplayTransformation is provided as an argument, rule is ruleInteger and mask is aForm. No translation. Information to be displayed must be confined to the area that intersects with clipRectangle.
	displayOnPort:
	displayOnPort:at:rule:
	followCursor Just show the Form following the mouse. 6/21/96 tk

	fileIn/Out	top
	writeOnFileNamed: Saves the receiver on the file fileName in the format: fileCode, depth, extent, offset, bits.
	writeUncompressedOnFileNamed: Saves the receiver on the file fileName in the format: fileCode, depth, extent, offset, bits.

	transforming	top
	align:with: Translate the receiver's offset such that alignmentPoint aligns with relativePoint.
	scaleBy: Scale the receiver's offset by aPoint.
	translateBy: Translate the receiver's offset.

	truncation and round off	top
	rounded Convert the offset of the receiver to integer coordinates.

	fileIn/Out	top
	collectionFromFileNamed: Answer a collection of Forms read from the external file named fileName. The file format is: fileCode, {depth, extent, offset, bits}.
	writeCollection:onFileNamed: Saves a collection of Forms on the file fileName in the format: fileCode, {depth, extent, offset, bits}.