Hello, Shane!
Thank you for being a FormsViewer early adopter.
FormsViewer has support now for 46 qRules commands. There are a total of 160 commands but a large number of these are math functions.
Please assume FormsViewer supports every qRules command that you need. Some commands, such as ClearErrors or GetErrorCount are not valid with FormsViewer because validation is done differently but the majority of others should be working well. If not, we'll add it to our list of things to do for v1.3, slated to be released at the end of this month or early December.
We have chosen not to document which commands are supported because they will be constantly updating the tool and it is too difficult to keep the documentation in synch since we are releasing every two weeks or so.
So, just assume it works. If it doesn't let us know and we'll turn around a fix soon.
Sorry for the lame answer.