Nested scrollbars (a scrollable area within another scrollable area) present some unfortunate difficulties, mainly when scrolling trough them with the mouse wheel. Whether such scrollbars are a good ...
When you mouse over line numbers in IDEs, such as Visual Studio or Notepad++, the mouse cursor is flipped horizontally. I can't think of a reason this would be a ubiquitous user interface decision. ...
What is a good threshold for a UI which allows users to place objects, snapping them to a grid? 25% of the grid size? Less or more? Should the user be able to change this?