the cursor looks like pencil
It usually looks like an arrow. But you can customize the mouse cursor to have a wide range of appearances if you want to. You can do this by going into 'My Computer' and selecting the mouse icon.
An I-beam is a cursor on the mouse that makes it look like a capital "I". It happens when the mouse goes over highlightable text. When you mouseover text, the cursor changes its look, the new 'I' look is called an I-beam pointer.
The mouse pointer, or cursor, changes shape.
it shows a hand pointing to it
crosshair
It could be many shapes, depending on your graphics application. Some common shapes are pencil, arrow, paint brush, and cross hair.
A pencil is usually sharpened to a point.
The computer cursor is the little arrow (or whatever you have set it as) that moves about the screen when you move your mouse, or finger on a trackpad. You use it to click things, drag things around, highlight words, and things to that effect. When the cursor looks like an animated glove, the item your cursor is hovering over may be clicked on for something to happen. If the computer is loading, it may appear as an hourglass, or on a mac, a "colorful spinning wheel of death." A computer cursor can also take the shape of a sword or armored glove depending on what game or application you are using. This isn't the exact denotation, but close enough XD.
There is no spicific shape
When you place your cursor over the insertion point it changes to the I bar.
A double headed arrow will display when the mouse cursor is pointed over a window or an object that can be resized. This is usually the edge or corner of a window. The arrow can be vertical or horizontal and is used to drag the object to increase or decrease its size.
it is a cylinder with a cone attached