Hello all.
Having too much time on my hands I was browsing the HeidiSQL - v. 3.0 rel. 572 - helpfile (instead of getting some honest sleep).
Happened to browse the 'Geographic featues' folder, subfolder 'Polygon properties' and found another subfolder called 'Content' which seems to be a duplicate of the whole help tree (including another 'Geographic features' with its 'Polygon properties' with another 'Content' and so on...).
I might truly say that the thing is *infinitely* helpful... :-)