The double back slash macro passes an instrument symbol to all windows in all Windows sessions. (A Windows session is one Microsoft Windows window; the Windows version is capable of running multiple Windows sessions). To use the double back slash macro, type two back slashes (\\) before a symbol, i.e., \\<symbol> where the back slashes are literal, and <symbol> is an instrument that you want to display in all the windows in all sessions.Double Back Slash Macro