Описание тега scroll-lock
Scroll-lock is a key or a feature that avoids content being scrolled in a usually text based window.
The scroll-lock key, that is placed on the top right of the keyboard, toggles scrolling of text within many terminal based applications.
Scroll-lock is also a term for a feature, which allows to stop scrolling of any kind of contents. For instance the Android logcat console in Eclipse has a scroll lock-feature that is toggled by a graphical button.