> I made the same assumption, but it's not a truly right. I declare a private variable in a main program pcTable and assign pcTable='' (This is important to assign a value, before using a variable). Then I create a form and test, if this variable is still visible. I found, that if I issue Read Events after
>do form MyForm, this variable is still visible in all methods and events, otherwise this variable is visible only for Init and then it becomes out of scope. You can test it.

Read the docs on PRIVATE - it hides prior declarations but does not explicitly create the variable. If this were not the case, please explain how PRIVATE could support wildcarding:

PRIVATE ALL LIKE p*

would have to create an essentially infinite number of variables (at a minimum, 27*(37^128) seems to ring a bell, but clearly a lot more than the maximum value of MVCOUNT.

Look at the difference in how the LOCAL and PRIVATE declarations are defined in the VFP docs - PRIVATE states that it hides previously-instanced variables, while LOCAL explicitly creates variables.