I see a pattern.

This error mode is similar to the case where I tried to have some optimize statements outside a loop(algo). Again, it's accepted by the language but the effect is undefined. It was runtime error 042 but I could not trace it to my fault and I needed to start a thread about it to figure it out. http://www.opserver.de/ubb7/ubbthreads.php?ubb=showflat&Main=53321&Number=443868#Post443868

Another example: combining Portfolio with RULES+PARAMETERS at the same time. It's accepted by the language and to my mind it is a natural outgrowth of what is taught in the workshops, basically combining all of them. The effect? Error 042.
http://www.opserver.de/ubb7/ubbthreads.php?ubb=showflat&Main=52960&Number=441166#Post441166

The Remarks section of many of your manual pages are quite long. This is alot for the user to keep in his head.