The FAC-Neutral test has now been automated.  This shows up as indicator D5 in the hydrology section.  Previously, users had to manually mark the Fac-neutral as true/false. 

The methodology for the FAC-neutral test is as follows (taken directly from the Eastern Piedmonts and Montains Regional Supplement):

The FAC-neutral test is performed by compiling a list of dominant plant species across all strata in the community, and dropping from the list any species with a Facultative indicator status (i.e., FAC, FAC–, and FAC+). The FAC-neutral test is met if more than 50 percent of the remaining dominant species are rated FACW and/or OBL (Figure 63). This indicator may also be used in communities that contain no FAC dominants. If there are an equal number of dominants that are OBL and FACW versus FACU and UPL, or if all dominants are FAC, non-dominant species should be considered.