This summary is not the rule. The rule text controls.
When you're writing a legal document, you don't have to repeat yourself if you've already said something earlier. You can simply point back to what you already wrote instead of typing it out again.
This works within the same document, like referring back to something you said earlier in the same pleading. It also works across different documents. You can point back to a statement made in an earlier pleading, or reference something from a pleading in a motion you're filing later. This saves time and keeps documents shorter, since you don't need to copy and paste the same information over and over.
The key thing to remember is that these references need to be clear enough that anyone reading the document, including the judge, can easily find and understand what you're pointing back to. If your reference is too vague or confusing, it might not count as properly adopting that earlier statement.