Did you mean the game window?
The abbreviation of heads-up display. These icons show up if your character is either an antagonist, or wearing a 
Security HUD or a 
Health Scanner HUD.
Antagonist HUD Icons
These are the icons that display over some persons under certain circumstances.
| Icon | Description |
|---|---|
 |
Revolutionary. Can only be seen by other revs. |
 |
Head Revolutionary. Can only be seen by other revs. |
|
Cultist. Can only be seen by other cultists. |
|
Syndicate Operative. Can only be seen by other operatives during Nuke |
Security HUD Icons
These are the icons that display over all persons while you are wearing a Security HUD.
Job Titles:
Additional Info:
| Icon | Description |
|---|---|
 |
Wanted |
 |
Prisoner |
 |
Parolled |
 |
Released |
|
Tracking Implanted |
|
Chemical Implanted |
 |
Loyalty Implanted |
Medical HUD Icons
These are the icons that display over all persons while you are wearing a Health Scanner HUD.
| Icon | Description |
|---|---|
 |
No Viruses Detected. |
 |
Virus Detected |
 |
Unknown Lifeform Detected |
 |
Deceased |