Tiny and smart! Puntuado con 5 de 5 estrellas

1. It has extra advantage: hovering up/down arrous (buttons) gives us delicate and precise scrolling that hard to get by even smooth scrolling.
2. When the page is wide, the buttons dissapear (probably to avoid text hiding), but sometimes they are needed, so the toolbar button to toggle these buttons is highly desired.
3. It is strongly desired to expand this ability also on sidebar (but the sidebar set of these buttons should also be in the main window). For sidebar is also desired right/left scrolling.
4. Sometimes we want to open a page in sidebar. The bookmarking allows this (there is the appropriate checkbox). If it is possible by some way to add the positioning to bookmarks - would be great.