Although the marks in the clothes are often more annoying than comfortable. Then they are there for a very exact reason. Namely you know exactly how to treat your clothes when washing and drying.
For example, if you wash your clothes at the wrong degree of heat, or tumble dry something that cannot stand it, you run the risk of standing with shriveled clothes you can no longer fit. And there is no reason why, when the manufacturer of the textile or clothing has given you exactly the knowledge you need to properly wash it.
But what does the long line of symbols mean?