Pen Blocks – List

Block	Description
	The block removes all marks made by the pen or stamping. It is the only pen block that the Stage can use.
	When used in a script, the sprite will produce a bitmap image of itself which is stamped onto the stage. (Because it is merely a picture of the sprite and not a sprite itself, it cannot be programmed.) Like other Pen blocks, the Stamp block will not draw over sprites. The erase all block removes all stamped images.
	The block will make its sprite continuously pen a trail wherever it moves, until the Pen Up block is used. The colour, size, and transparency of the trail can be changed with other blocks.
	If a sprite is currently using the pen because of the Pen Down block, the block will cause the sprite to stop drawing a trail. (Otherwise it has no effect.)
	The block sets the pen’s colour to the given colour, which can be selected by clicking on the input.
	The block changes the specified value by the number input. The “colour” option of this block replaced the pre-3.0 block change pen colour by, and the “brightness” and “saturation” options let Scratchers replicate the effect of the pre-3.change pen shade by block.
	This block sets the pen’s colour, saturation, brightness (also known as shade), and transparency. The first value can be selected from “colour” (default), “saturation”, “brightness”, and “transparency.”
	The block changes the pen size by the specified amount.
	The block sets the Pen Size to the given number. The pen draws a trail of circles. The diameter of the circle, in pixels, is equal to the pen size.