The Redraw tool located under the Survey Processing tasks (see below) revisits and redraws every survey element based on the currently attached feature definition and style file. This means that all the graphics are updated, all the annotations are redrawn, all the VBA macros attached to the elements are re-invoked. This is useful in a situation like changing the DGN preferences to display 2 decimals for elevations, when survey needs to be enforced to redraw all the annotations. Or, when the graphics drawn by the VBA needs to be refreshed due to changes in the VBA macro. This would not be useful in the case the user changes Feature definitions, as survey automatically tracks these type of changes, but rather in very few situations when the software is 'blind' to a certain type of change.