Introductory sentence(s), providing a statement of what the tool is, in general beginning with the name of the tool as the subject of the sentence. (Do not begin by saying that JDeveloper provides this tool.)
More text, explaining what can be done with the tool, summarizing the main tasks or presenting other similar introductory material, which may well terminate in a link to a procedure or, more commonly for these tools, a group of procedures. How?
Introduction to a list of the primary features offered by the tool, where applicable cast as tasks the user is able to accomplish:
Feature
Feature
Feature
Feature
Feature
Feature
Feature
More text, as applicable. Fully introduce the tool, albeit at a high level, summarizing all significant points: what the tool is, what the user can do with it, how, in general, to use it. Provide How? and More links as needed.