Hi Enrico,
Most of the parameters appear to be defined as mask parameters (see the Documentation on Block Masks for more info). They are entered by double-clicking on the mask, and then subsequent values are sometimes calculated from those. For example, you can find where "cross_sect" is calculated as follows:
- Navigate to the Skewed Hexagon: sm_stewart_platform/Stewart Platform System/Manipulator/Platform
- Select the block and press Ctrl+M or right-click the block and choose Mask > View Mask...
- In the Mask Editor dialog that opens, click the Initialization tab.
- You can see here that cross_sect is calculated from angles, which in turn is calculated from skew, which in turn is a parameter that you enter in the mask dialog (and has the value hex_skew here).
In short, there are lots of nested mask parameters and some values calculated based on those. If the documentation above is not sufficient, there is also a walkthrough on how to create a mask that should help clarify how they work.
