TWAIN Scanning Guide Using the Preview Window12 User’s GuideMake this the first region—select this option to set the region number to 1. This option is notavailable if the region you right-clicked on is already at position 1. After selecting this option, allother regions will have their number update automatically as appropriate.Make this region a lower number—select this option to move the region number up one in theprocessing order. This option is not available if the region you right-clicked on is already atposition 1. After selecting this option, all other regions will have their number updateautomatically as appropriate.Make this region a higher number—select this option to move the region number down one inthe processing order. This option is not available if the region you right-clicked on is already thelast region in the processing order. After selecting this option, all other regions will have theirnumber update automatically as appropriate.Make this the last region—select this option to set the region number to the last number in theprocessing order. This option is not available if the region you right-clicked on is already at the lastposition in the processing order. After selecting this option, all other regions will have their numberupdate automatically as appropriate.Clear All RegionsRight-click anywhere in the preview window where there are no regions, and then click on Clear allregions to remove all of the regions in the preview area. This will leave only the region labeled asnumber 1. There must always be at least one region for scanning.