I see it don't have a real UV menu !!!!!!!!!!!!!

You have each time pressing, when edges seleceted : CRT-E and choose Mark Seem !

WHY could'nt it be a menu UV Seam instead of call the menu from CTRL-E , with a simple MArk Seam button ??????

You should select edges , and in a tab UV menu on the left just press a button named "MARK UV" to mark the seams !

I say that to bring Blender to really all people, new comers, newbbies, people coming from another software etc ...

Blender can keep it's Menu called by key, BUT THESE MENUS SHOULD BE ON TAB PANELS ALSO !!

Well i use Blender fromm long long years , so no worry for me, but they could do an effort to really bring all menu to tab panels !