The chart acts as the equivalent of the noticeboard in Watson's house, and players can check where all STASH unit locations are, and whether they have built and filled them.
The menu when reading the noticeboard, selected on the "Elite" tier
Trivia
S.T.A.S.H stands for "Store Things And Stuff Here".
Periods between letters are usually used for initialisms, where each letter is pronounced individually, however, S.T.A.S.H is pronounced as one word, like an acronym.
This is the only item built in the wall chart space that provides any practical, game-related purpose, despite being the lowest tier item.
Construction
_interface.png)
.png){kind=link}
.png){kind=link}