Visual Studio Shortcut keys for Bookmarks

Question

I was trying to practice keyboard shortcuts to become a more productive programmer. I came across a shortcut that said Toggle Bookmark is Ctrl+K,K. But in my environment the shortcut key is Ctrl+B,Ctrl+T.

I am trying to figure out what is causing this difference?
I am running Visual Studio Enterprise 2015 with ReSharper 9.2 working in a C# web project
I doubt the website is wrong because other websites say the same thing.

Source: http://visualstudioshortcuts.com/2015/

Answer 1

Maybe it's just a mistake in source? Never actually need this shortcut, but tried CTRL+K+K instead of CTRL+K, and it works

Answer 2

Different keyboard mapping schemes have different shortcuts, you set the one you want in the keyboard options: the default scheme uses Ctrl+K,Ctrl+K for toggling bookmarks, so you have yours set to one of the others, probably "Visual C# 2005" as per "Bookmark Window Shortcut Keys, Visual C# Scheme"