Yellow box around screen?

[WPCentral Question]

Ok so i just got windows update 8.1 . I was going through my settings to see the different feature when mi clicked something and it caused my phone to form a yellow box around everything i click . windows phone said to click the up volume button and the home key to disable it . the problem is , my up volume doesn't work , only my down button works . I need to know how to work with this . I know it's a bad description but I don't know the name . when i click on something a yellow box goes around it and I have to double tap to get to the app . i don't know how to scroll and I need help ASAP

 

[Guytronic]

Go to ease of access under settings and double tap "narrator" to disable...