@Z22A full list of the easing curves (inQuad etc.) that can be used as the third parameter of animate: can be found in the Qt C++ header file
https://code.woboq.org/qt5/qtbase/src/corelib/tools/qeasingcurve.h.html which lists
Linear,
InQuad, OutQuad, InOutQuad, OutInQuad,
InCubic, OutCubic, InOutCubic, OutInCubic,
InQuart, OutQuart, InOutQuart, OutInQuart,
InQuint, OutQuint, InOutQuint, OutInQuint,
InSine, OutSine, InOutSine, OutInSine,
InExpo, OutExpo, InOutExpo, OutInExpo,
InCirc, OutCirc, InOutCirc, OutInCirc,
InElastic, OutElastic, InOutElastic, OutInElastic,
InBack, OutBack, InOutBack, OutInBack,
InBounce, OutBounce, InOutBounce, OutInBounce,
InCurve, OutCurve, SineCurve, CosineCurve,
BezierSpline, TCBSpline, Custom, NCurveTypes
I have tried all of them and all except InCurve, OutCurve, BezierSpline, TCBSpline, Custom and NCurveTypes work as I would have expected. SineCurve and CosineCurve are useful for getting circular motion, with CosineCurve having the slight oddity of starting at its halfway value - which makes sense as it a sine curve shifted by 90 degrees. It may be that iStripper recognises InCurve, OutCurve, BezierSpline, TCBSpline, Custom, NCurveTypes but if so I have no idea how to specify the data that they need.
For the second parameter of animate: the following are recognised
forward
backward
loopforward
loopbackward
pingpong
The "single shot" options, forward and backward, are used less often than the three cyclic options though I quite often use them to oppose the first part of a cycle so that it has a delayed start (see, for example my "Houses" scenes
http://www.theemusnest.eu/scenes/Zips/TheEmusHouses.zip (warning, it's 80 Mbytes due to the images it contains). Backward runs the easing curve backward so it starts from it maximum value and ends at 0.0 - though you could get the same effect by negating the size of the motion and offsetting the start by the sme amount it is often more convenient to run the curve backward. Unfortunately there is no pongping that would run pingpong backwards.
If you misspell one of these or an easing curve then you get forward or linear respectively - with no indication that there was an error. The same is true for numeric values in a .scn file so if you provide something that is not recognised as a number you get 0.0 with no indication that there was an error. The same sort of thing applies to missing commas. I really ***** the lack of any warning that something was wrong.
This "feature" would explain why "allow: Starting nude" was treated as if it was effectively allow nothing.
I had spotted clipplane: before, though I don't have any scenes using it. If I remember correctly it sets the position of the rear clipping plane beyond which nothing can be seen.