clockwise

anticlockwise

direction of cu rsor movement

there is no fixed rotation

Circle can be stretched into ellipse

tool has no effect upon circle

circle can be deleted

circle can be moved

details cannot be added to a locked layer

details can be erased from a locked layer

details cannot be added or erased from a locked layer

details can be added to a locked layer, but disappear on saving the file

every detail cut by a section plane must be hatched

it is upto the draughtsman which part are to be hatched

there is no need to hatch any part of the drawing

a bolt within the sectional view is not hatched

it can be opened in any other CAD application

it takes less space for storage

it can be opened in MS word

it can be opened in earler version of Autocad