Klever

I looked through the Linux tags created for EMG specifications and decided just to add main tags that are not Linux-specific. The reason for the decision is that many tags are outdated. They have an incorrect structure from the point of view of a possible solution and I mainly tended to fix this. Look at the file with the tags tree in the attachment to this comment.

I merged this branch to master in 2625e7311 after CI passed test cases. This change is not backward compatible. Moreover, you should migrate your marks manually using preset tags as most as possible.