One Contained System
Say you are working on a large and complicated system. In lieu of trying to manage "global" settings by sourcing ValueField components, you can use dynamic variables to help assign names to settings or other useful values. This is usually accomplished by placing a DynamicVariableSpace on the root of your object (or root of your "library") and having a specialized dynamic variable slot for containing the dynamic variables. Depending on how many dynamic variables are used, it may be beneficial to delegate them to multiple slots.