When the article has a lot of sections, it sometimes requires some effort to visually identify the section after it is scrolled to from the menu.
This is particularly true for Wiktionary, where sections are abundant, usually short, and lacking pictures and other visually distinguishing signs.
After the page is scrolled to the section, its header, or the whole section should briefly change color. This will save brain "CPU cycles" that can be used for better things.
This site http://english.stackexchange.com , among others, employs such behavior.