What's the story behind bruteFind3 and bruteFind2?

[Abdelrazak Younes]

Could someone who recall the story please give me a quick summary? 
Basically, is bruteFind3() the preferred function? And if yes why was it 
disabled?

Using bruteFind2(), it seems that there are cases where the cursor is 
blocked when using the down arrow on some fractions.

Abdel.