I use a different program but in theory points and editing should carry over.... so hope it helps
The dwell-time of the laser is the secondary brightness variable after laser output and the rate of draw is how you can control it so a line drawn:
X-------------------------------------------X
appears far dimmer than:
X---X---X---X---X---X---X---X---X---X---X
drawing it like that also avoids the overlapping of going back and forth which sounds like the problem you were having.
My software frame editor has an 'interpolate' function that lets you say how many points should be added along a selected path that makes this easy.
Then you have to overlay points to get serious brightness: to make single dim points for an abstract I've had the best luck with a blank point with 2 repeats overlaid with a active point with 6 repeats; then for the bright points a blank point overlaid with three active points each with 6 repeats.
For some reason multiplying the number of repeats together does not result in the same brightness as separate points with the same total number of repeats. I'm not entirely sure yet what it means by repeats, I'd think that was the same as more points but apparently not, either way this works for me and may work in QuickShow's editor
Dynamics/EasyLase LC/FD820/RGB 400mW Homebrew w/EMS4ks