Before understanding the Physnet, there are a few prerequisites to the dimension's fundamental structure. Let's first take a look at its inhabitants, known as "Avatars."
In a similar nature to how websites and files have physical manifestations as places and items, users of the Internet have physical manifestations of their online personas. Consider the theory that one's online self acts differently from their real-world self. When someone is given the opportunity to act online, whether anonymously, through an alias, or even through their real-world identity, that person typically acts differently from how they do in the real world. They might be more impulsive and outspoken in online discourse, or they might be more patient and reserved.
This online persona translates to the Physnet as an Avatar. That is to say, you have a dimensional twin who acts the way you do online, looks the way you present yourself online, and is the person you are online. Wherever you go online, your Avatar goes in the Physnet.
Due to the nature of Avatars being more or less controlled by their real-world counterparts, they are aware of our dimension. They recognize that we "pull the strings" in a way, but as a matter of fact, the idea of being "controlled" by us doesn't bother them. As we mentioned before, Avatars are the manifestation of your online actions, meaning they have the same mentality that you do. Therefore, anything you "make" your Avatar do is something that they would have done regardless of your input. From what most Avatars say, they don't even feel as if they're being controlled and very rarely think about the notion of dimensional counterparts being behind the wheel.
Another aspect of Avatars determined by online users is their appearance. Similarly to how you can change your profile image on different social websites, your avatar can change its appearance whenever you'd like. The prospect of having multiple identities across various social sites also translates to your avatar shifting appearances or putting on a disguise, depending on the nature of where you're going or which account you're logging into. When it comes to anonymous sites like 4chan or Omegle, everyone's Avatar is set to a uniform appearance depending on the site. For example, when an Avatar visits 4chan, they become a faceless, green-skinned figure wearing a black suit with red tie. Unless, of course, you adopt a tripcode or consistently use a name in lieu of anonymity.
For the sake of simplicity, and also because a user and their avatar are one and the same, this guide will refer to "you" instead of referring to "your Avatar." In this sense, try to imagine yourself as your own Avatar.
If the Internet is dependent on computers and servers that are all linked to each other, and if the Internet has its own physical space, it only makes sense that all computers would have physical spaces of their own.
Think of your computer as your own house within a large storage area; it has everything you'd need in a normal home (bedroom, living area, kitchen, etc.) in addition to storage areas for your files. The place is fully customizable, too. However you imagine your computer to look, and however your perfect home would appear, is exactly what it looks like. A cottage, a high-rise apartment, a starship, or even the hill from Bliss could serve as the space representing your computer.
Speaking of Bliss, any wallpapers you have for your desktop are likely to appear on your actual walls (unless, of course, you're living in an open area). If you have a software for live wallpapers, then they can be animated.
The one thing a home can't have is a desktop or laptop computer, since you're already living inside of one. As far as the Physnet seems to be concerned, the word "digital" only refers to technology in our dimension.
On the topic of files, folders appear as actual, physical folders, complete with paper documents as your text files. Picture and video files are a bit unique in their own right, as they appear as cards that can be stretched to any size you'd like, and can be stuck to walls as decoration or hovered in place for easy viewing. Videos behave in the same manner, with the volume and timeline being adjustable by popping sliders out of the frame's sides. Depending on what viewing software you're using, other tools can pop out to change other simple aspects like colorization or video speed.
Editing software for images and videos appear in your computer as seperate rooms in your home. For an image editing software like GIMP or Photoshop, it could appear as an art studio with tools like brushes, "smudgers," and selectors, or as a darkroom with dim red lights for developing photos. Like the rest of your computer, the form of the image-editing room comes down to your preferences. As for editing video, that's more likely to appear as a room for editing actual film strips like the early days of movie-making. Cutting, pasting, overlaying... it's all done by hand, but the process comes to you just as easily as using your mouse and keyboard.
Sound files are a bit different from visual files in that they're more dependant on audio software. While pictures can just be viewed on their own without any issue, and videos are only dependant on external software if you want to make some extra changes to the viewing experience, sound files are more like casette tapes, CDs, or vinyls. That is to say, you need an audio player to be able to listen to anything. Your computer is almost guaranteed to have one built-in, and it can take whatever appearance you want. Think of vinyl players, boomboxes, old-timey radios, etc.
As for editing music software, it can be as performative as you'd like. If you're mixing some audio samples in Audacity or FL Studio, it can be like the video-editing formula of cutting and copying audio strips (such as unravelling casette tapes or by uncoiling vinyl discs) or the performative formula of playing out each instrument/level with some robotic bandmates.