"&40" &41" Symbols appearing in API documentation, meaningful or a glitch?

Development Programming & Scripting C++
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1

I only just started noticing these within the past month I believe, do these mean something im not familiar with or is it an issue with their online documentation system? For instance, in the 5.3 reference for AAIController::RunBehaviorTree the example shows:

virtual bool RunBehaviorTree  
&40;  
    UBehaviorTree &42; BTAsset  
&41;

If it is a glitch it is interesting that they havent fixed in the past month or so. And conversely if it is some hip new programming thing please school me, I am eager to learn :nerd_face: