Does Battlefield 4 allow cross platform multiplayer

It is possible through the graphic settings ingame.

Sorry, that I have my German Battlefield 4 now enabled, but I'll translate the important words for you. Ingame you may press ESCAPE to go into the menu. There you go to "Settings/Options/Preferences" and then onto the graphics tab. You'll see this extract:

Two white highlighted areas:

1. In the tab menu on the top: I won't translate this for you, this is homework.
2. "VOLLBILD-MODUS": Translates to "fullscreen mode". There we go!

In that second highlighted menu, you'll have three options for now:

• Fullscreen: Guess what!
• Windowed: Window mode, as you may wish it. You'll have the game in a seperate window.
• Borderless window: I guess you'll love it. The screen is a seperate window, but it has it's borders cut off. So it fits over your screen, just like fullscreen does, but it is in window state so that you can ALT+TAB out quickly, for example.

HINT: If you want to play with these settings, I recommend you to go to the TEST RANGE. There you can test out every vehicle and weapon - and settings when not online on competitive servers.

NOTE: Remind, that if you change settings in the Test Range, your computer may have a slightly better performance as there are 63 soldiers less in the field as usual. :)

Say you are playing Conquest. When someone issues an order you will see something like this over the flag identifier:

It will be an attack order on an enemy flag or objective and a defend on your own flag or objective. So you will see the symbol when you look towards the flag/objective in first person with the identifier (letter) with those marks around it.

Additionally in the mini-map view you can see attack/defend orders that look like this one:

Objectives are not available in every game mode so you will not see attack or defend objectives in those modes. One for instance is Team Death Match.