"Yup, they are." Annette replied, after arriving by the side of the holographic screen, with Lain. After seeing the holographic screen up close, Lain couldn't help but marvel at its ingenuity.
On this new holographic screen, there were only three large buttons that read Bathtub, Shower, And Toilet.
While Lain was staring at the menu buttons, Hui Shi continued. "There should be three standard light-blue colored buttons on the screen. Bathtub, Shower and Toilet. The appliances in the bathroom are controlled by voice command. Clicking on a button tells the holographic television which appliance you would like to control using your voice.
You can also use your voice to tell the television, which appliance you wish to command also, by stating the appliance's name before you issue the command."
"Commands?" Lain couldn't help but ask, before clicking on the shower button. Clicking on the shower button, made the holographic button that was originally light blue in color start to wiggle back and forth in place for a couple seconds, before turning red, and staying still again.
"Yes. Commands allow you to control the appliances. You can give any reasonable demand to the holographic screen, and it will do as told. For example, if you click on the shower button and tell it to turn on the water, the runes in the room will condense water above the bathtub that you can take a shower in." Annette replied with a smile.
Hearing her words, Lain did just that. He quickly said, "Please turn on the water in the shower."
A second after he did, water started falling from the space above the large bathtub. The water seemed to appear from thin air directly above the ceiling of the bathroom before falling towards the bathtub on the floor of the bathroom. Strangely, Lain noticed that the water, upon touching the bathtub, seemed to evaporate and vanish from sight.
Marveling at the sight of that, he couldn't help but bend down and touch the bottom of the bathtub with both hands. Touching the bottom, he realised that it was dry to the touch, but the water that fell on his hands didn't evaporate, but instead rolled down his hands towards the bathtub below.
Watching Lain play with the bathtub, Annette, continued her explanations. "Saying the same command after pressing the bathtub button, causes water to condense at the bottom of the bathtub instead of evaporate. Naturally, you can change the temperature of the water that falls down, on command as well, by stating that you want hot, warm, cold or very cold water. You can even tell the holographic system what exact temperature you wish the water to be in, and it'll change to that temperature."