General Principles of Working with Workbooks

General principles of working with workbooks can be shown as a scheme:

To work with a series tree , use the following interfaces:

NOTE. All interface/class names are hyperlinks, click a hyperlink to see a detailed description.

Conventions:

	Class_1 inherits from Interface_1.
	Interface_2 inherits from Interface_1.
	Interface_2 can be obtained using properties/methods of Interface_1.