DPI is 254 or 0.1mm. If your image density (DPI) is too high your lase will take longer & overburn.
Moves like an old dot matrix printer, starts at left, scans to right, return and repeat 1016 time for a 4" logo.
Same as above but lases in both directions. May drift a bit during burn. Twice as fast as Scan alone.
Time (dwell) matters for these two modes. Smaller Time = less dwell = faster / weaker lasing. Speed is the slew speed while not lasing.
Speed is in mm / Min. Bigger is faster.
Speed controls lase speed in mm / Min. Slow speeds can ignite your workpiece. Outline will lase both sides of a single pixel line except for .DXF files which will only lase lines & circles (no text).