Splitting an Entity
This post talks about splitting an entity or dividing an entity in two or more numbers. The procedure is very simple and easy to use.
1. Select or highlight the entity you want to split.
2. Right click and select Split.
3. Place point or click on the entity where you want to split.
4. After you are done, click OK. You have an entity divided into parts. You may give dimension or relations to constrain the entity.










This looks very straightforward – after the explanation you’ve given, of course
is there a way to merge entities too?
Just select the splitting point and hit delete. Here is the detailed post: http://gupta9665.wordpress.com/2010/03/22/joining-a-split-entity/