Almost all of your questions can be answered by referring to Expression Manager in the manual
It can't. My question is not
how it works but
to what it is used. What can I control with any kind of expression, where can I do this; and if there is an equation, what in fact will happen in case of true and false?
»Your tool to fasten this plate is as screwdriver«. Manual says how to insert a screwdriver into a screw's slot and to turn it (clockwise). And maybe to stop if it's tight. My problem is: «why shall I fasten this plate» or more «what is to take to solve it» Answer, ›a plate‹. Better answer, ›a plate to close the hole there‹. Then I can ask how to operate, fasten, the plate.
I can write thousands of expressions (my maths shall be good to), but I do not know which sub-problems I can handle, solve with this function.
I strongly recommend Expression Manager, because it is a lot more flexible and if you know the basics also a lot quicker.
And same deadlock again. A workshop with a lot of tools is useless without workpieces and a plan.
How do I have to organize all my workpieces to get an object ready? And with that I can think about tools, bolts, nuts…
This manual is to my personal understanding of situations as so many others. Lots of details, instruments - but no word about why I should us this or that instrument.
»Hang on the picture, please.« »You need a nail.« But no hint why at all, where at the wall, a hammer is need, too, ho deep that nail must be driven into wall (to et picture close to wall or with a tilt). I am missing all that hints.
About JS examples, what are those arguments i feed a function() with? What do I get in hand to handle, how Lime will react in it, where to place such a function() in my questions code? (I ask this knowing what an other tool does to JS and other coding experiments!)
Markus