How do commercial pilots keep situational awareness of their current call sign? Air transport pilots operate flights with a variety of flight numbers, often with multiple flights in the same day. This means, as a result, the callsign that they are using changes as well. Also, according to this answer, sometimes the callsign is completely different from the flight number.

Given that, how do pilots maintain keep track of what callsign that they are listening for at a given point in time? Are there conventions for posting the callsign somewhere in the cockpit?
Some modern airliners have a place where the flight number can be displayed on the cockpit displays. This information can be entered off the dispatch paperwork when setting up the flight plan, and is displayed throughout the flight for easy reference.

For example, you can make out "DLH463" on the screen at the bottom right of this Lufthansa A380 cockpit photo, corresponding to Lufthansa flight 463.

The Boeing 787 has a similar feature:


  The two outboard displays are a fixed format that provides primary
  flight display information combined with an “auxiliary” display that
  consolidates frequently referenced information for the crew, such as
  flight number, each pilot’s microphone-selected radio and its
  frequency, and transponder code.


You can see this on this 787 cockpit photo at the top of the leftmost monitor: "FLT -> BAW787"

(Photos not embedded due to licensing restrictions.)