To reduce the dependency of the model on variables and objects in workspaces and data dictionaries, which can improve model portability, readability, and ease of maintenance, use None.

When you use this setting, migrate design attributes from existing Simulink.Signal objects into the model by using block parameters and signal properties (for example, in the Model Data Editor or in Signal Properties dialog boxes).

Use the Signal Properties dialog box to specify explicit resolution for signals. For more information, see Signal Properties.

Use the State Attributes pane on dialog boxes of blocks that have discrete states, e.g., the Discrete-Time Integrator block, to specify explicit resolution for discrete states.

Multiple signals can resolve to the same signal object and have the properties that the object specifies. However, the signal object cannot use a storage class other than Auto or Reusable.

MathWorks^® discourages using implicit signal resolution except for fast prototyping, because implicit resolution slows performance, complicates model validation, and can have nondeterministic effects.

Simulink^® software provides the disableimplicitsignalresolution function, which you can use to change settings throughout a model so that it does not use implicit signal resolution.