Allows combining arrows with Mouse Pointer effects (e.g. grid). Also added progressive acceleration of movement during the first 1 second of key press (starting very slow movement for precise displacement). Bugs fixed in Mouse Pointer.
Maintain ALT to activate the selected mouse Pointer. Also possible to ALT LOCK for maintaining the cursor. Local popup window allows selecting. Changed the View options selection to match this popup approach.
For this new MousePointer to snap to grid, a Grid specific for each view is necessary. Grid for moving is orthographic (with an aspect ratio), and grid for mixing or rotation is in polar coordinates. Rendering is done with new Primitives. The entire calculation of grab coordinates is changed to be able to snap to grid coordinates in all circumstances.
Rename class Glyph in Decoration to Character ('Glyph' was used in system X typedef). Added MouseOver in Mixing and Layers view to show highlight color on icons of Symbol and Initials of source. Show left panel on clic on source Initials.
