Surface Selections Menu ‘Surface Selections’ provides tools that can be used to select specific areas of the active surface: ‘ Select all ’ - selects the entire field in the current layer. ‘ Select all (including background) ’ - creates a selection box from the widest points of the current layer.  ‘ Select field edge ’ - selects the outer edge of the field. ‘ Select none ’ - removes current selections. ‘ Invert ’ - inverts the current selection (e.g. if the edge is selected it will be inverted to select the inside of the field.) ‘ Expand ’ - expands the selection by the set distance. ‘ Contract ’ - contracts the selection by the set distance. ‘ Collapse selection to field ’ - moves the selection to only apply to the active field. ‘ Load/Save selection ’ - save the current selection for later use/reference, or load a previous selection to reuse.