How do I change the line width when displaying a protein sequence in Sequence view?
Click the Line Width Button in the Side Toolbar
By default SnapGene automatically adjusts Sequence view line width to wrap to fit the size of the SnapGene window.
Click the "Line Width" button on the side toolbar to set the line width independent of the SnapGene window size.
Click the bottom section of the "Line Width" button to choose from a range of preset line widths, or type to set a custom line width.