Shows all available informations about callsign. You can only look at it or see why the QSO Check wrote warning.
On the first line are basic informations - call, locator and time to easy WAV record of QSO.
Known call from unknown locator means that DF7DJ is known call but was worked on the past from unknown locators. Locator would be wrong.
Follows informations from C_W database for call and call with appended or stripped /P or /number.
Name is informational, known name means that call is probably correct.