info_observer_menu
info_observer_menu is a point entity available in 
Black Mesa. Represents a spawn point of a spectator during a multiplayer game.
This entity also can generate loading screens for multiplayer maps (check out the page for more information).
If there isn't at least one such spawn entity - spectators will spawn at (0, 0, 0) position (worldspawn).
Keyvalues
BaseEntityPoint:
- Name
(targetname)<string> - The name that other entities refer to this entity by.
- Global Entity Name
(globalname)<string> - Name by which this entity is linked to another entity in a different map. When the player transitions to a new map, entities in the new map with globalnames matching entities in the previous map will have the previous map's state copied over their state.
- Pitch Yaw Roll (X Y Z)
(angle)<angles> - This entity's orientation in the world. Roll is the rotation around the X axis, pitch is rotation around the Y axis and yaw is the rotation around the Z axis.
- Parent
(parentname)<targetname> - The name of this entity's parent in the movement hierarchy. Entities with parents move with their parent.
- Attachment Point
(parent_attachment_point)<string> - If set, attach to this attachment point on the parent during spawn.
- ID
(observerid)<integer> - Corresponds to the index of a loading material for a map (check out the page for more information).
