Data
The Datas on Skyscrapersim are every texture / sounds / fonts etc. Those data are everything that makes the building be like they are. If you don't have the required data for any buildings, that part of the building with the missing data will switch to the default.png file. They are found on the Data folder of Skyscrapersim. Default built-in Skyscrapersim data are known as SVN data. With othe Third-Party datas being downloaded on Integration Projects or Data Packs.
Textures
Textures / Images are files on png, jpg, gif and other image files that make up nearly the entirety of all data at Skyscraper. They can range from poorly made elevator fixtures to high quality windows or floor textures for example. In Skyscraper they are loaded on a building at the <Textures> section.
Sounds
Sounds are mostly used for elevators. Since the game doesn´t have any music beside the Main Page Music. They are used for buttons, doors opening and closing, and more.
Fonts
Fonts are used on buttons, signs and Elevator Indicators to show floors. They have their own folder inside Data. They are stored in .ttf files.