What is that thing for?! 
To help you brainstorm!
Click on the different topics related to Trades & Technology.
You can find different MindMaps below relating to different aspects of Trades & Technology.
The screen will populated with more topics to help you narrow down your search.
When you found the topic you are looking for, click 'View in Credo' underneath the MindMap.
A new page will take you to that topic in Credo Reference.
This is a great place to start when you are trying to decide what to do a project on!
