Widget Implementation
| CoordToWin | Find window containing a point |
| GeomReq | Specify desired geometry or internal border for a window |
| GetAnchor | Translate between strings and anchor positions |
| GetScroll | Parse arguments for scrolling commands |
| GetUid | Convert from string to unique identifier |
| MaintGeom | Maintain geometry of one window relative to another |
| ManageGeom | Arrange to handle geometry requests for a window |
| MapWindow | Map or unmap a window |
| MoveToplev | Adjust the position of a top-level window |
| Name | Convert between names and window tokens |
| Restack | Change a window's position in the stacking order |
| SetClass | Set or retrieve a window's class |
| SetClassProcs | Register widget specific procedures |
| SetGrid | Control the grid for interactive resizing |
| SetVisual | Change visual characteristics of window |
| WindowId | Retrieve information from Tk's local data structure |
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