At the main game screen, hold [Ctrl] and enter one of the following codes to 
activate the corresponding cheat function:

Result - Cheat Code
Add 100 to mall rating - hdirate 
Additional $100,000 - hdicash 
All technology researched - hdilore 
Complete current research project - hditech 
Toggle unlimited zoom - hdizooma 
Hold [Alt] + [Up] or [Down] to control view - hdidizzy 
View Sim animation data - hdiart 
Unknown - hdimax