When using the shape tool on a circle, there is only one node at the top. In the other word, you cannot clear any part of the circle as you like without rotating it precisely to the orientation you want.
Step 1: Draw a circle - Select the 'circle' tool. Click on a start point. Drag to an end point. Holding <ctrl> will ensure that it's a circle rather than oval. Holding <shift> will make the start point the centre of the circle.
Step 2: Shape the circle - Select the 'shape' tool. Select the node at the top and drag the mouse - the nodes are constrained to the circumference of the circle; place it at the start or the end of the "cut-out" section. Select the node remaining at the top of the circle and drag it to the other end of the "cut-out". If the mouse is inside the circle, it will form a pie. If it's on the outside, it will form an arc. (If you get the 'start' and 'end' mixed up - which I always do - there is a handy button to invert the arc on the interactive toolbar; clockwise <-> anti-clockwise)
Step 1.5a: While still in the 'circle mode' click on the central X and the handles change to rotational handles - drag a corner to make the 'top' somewhere else, then you only need to shape the circle once.
Step 1.5b: From the interactive toolbar, click on the rotational angle field and type in an angle to move the "top" somewhere else, then you only need to shape the circle once.
Step 1.5c: From the interactive toolbar, click on the "arc mode" button and it automatically eats a 90º chunk from the circle to leave you with an arc.
Step 1.5d: From the interactive toolbar, input a start and end angle for the arc (or just one and shape the other one) (This could be step 1: set the start and end angles before you touch mouse to paper space)
You don't even need to be precise with the cut-out section of the arc: just use the trim tool to tidy the edges. (But with the 'Dynamic Guidelines' on, being precise is a snap )
As for the eraser tool, couldn't it be just as simple as its name would suggest like in the Photoshop? Just erase, nothing else.
erm... Photoshop = bitmap program. CorelDraw = vector program. If you want to compare like for like, then use the eraser in PhotoPaint.:shrug:
It does exactly what you would expect: erases the part of the object under the eraser. Please refer to this post to get a better idea on how a vector image works and in turn how the eraser works.
Gadget at 2:26 (GMT -7) on Thu, Jul 10 2008]