Tools > Substitution > Final step of a substitution
In substitution you can add a revision date. Which means that you wish to view a substitution again at a later stage.
Example of a "not started" revision:
The standard that is set as revision date is 3 years. This can be changed in your substitution at the final step.
Once you have made a substitution or saved your work, the next revision will be visible in your substitution list. When the time limit has passed, this will be flagged as too old in "Overview"