thank you for the wowzie feedback, ZB’s! 
i did another one yesterday and though it has only 2 additional frames it is almost twice as big a file than the gull
i hope you’ll find the download of this 1.7mb worthwhile, anyway. it is just a ball hopping down some stairs.
first thing i did was constructing a stairlike polymesh object via the MultiMarker tool by arranging some cubes. it is far from perfection but just in case you find it usefull you can download it here (Digits: you might want to shift this to Z-place’s ressources section - let me know, i’ll edit this message - same goes for Kathy, if she wants to upload it to her site)
next thing i did was creating a new layer, loading the advanced-animation-script, going straight to object1 inputs and placing start and end-marks for the ball (after the first render resulted in the ball to melt into the stairs i esp. took care to make the z-position of the end-one much closer). then i clicked the stroke function and made a smallsized single simplebrush-stroke following the future up and down path of the stroke and pressed the now active loadstroke1 button, thereby recording it. afterwards i deleted the stroke via ctrl-z. i activated the fog in the render-window and set its color at depth2 to the yellow, decreased intensity. in the lighting-window i dragged the sun to a top-position and increased the shadows intensity and length (i made one version with shadows z-mode, but no shadows were rendered
(any hints welcome!) so what you can see is the default-shadow. back to the animation-script-buttons: i increased the number of frames to 50 and activated the bestrender button, pressed the execute and save button… the rest was done with “graphic converter”.
i believe the stroke-recording to be one of the nicest features in this overwhelmingly powerfull script. VERY clever, Digits!
… but i still have to make mucho experiments: the velocity of the ball seems to increase in the center of the pic… is this because of something i did while applying the stroke, like getting faster or less pressure?