Original: "There remains steady public confidence in the system depending upon full disclosure of all the facts ... ."

When you only need a portion of that quote and you need to add some clarity, this rewrite may be the result: "[P]ublic confidence in the [adversary] system depend[s upon] full disclosure of all the facts ... ."

1. Explain what "[P]" from the previous sentence tells a reader. (What was changed?)
2. Explain what "depend[s upon]" tells a reader. (What was changed?)