General published accounts of the Golden Dawn's curriculum, drawing on Israel Regardie's editions of the order's papers, describe Portal as a symbolic threshold grade, its absence of a Tree of Life number in the order's own notation treated in that literature as a deliberate marker of its transitional character rather than an oversight in the grade sequence.
The Second Order's name, Rosae Rubeae et Aureae Crucis, the Ruby Rose and Golden Cross, is itself publicly documented in the same published material, and general histories of the order note that this name change, from the elemental framework of the First Order's five grades to a distinct rose and cross symbolism, marks one of the most discussed structural features of the order's overall design.
Because Portal sits at exactly the point where the order's internal schisms of the early twentieth century were most consequential, disputes over who could rightfully administer entry into the Second Order, general histories of the Golden Dawn treat the grade as historically significant for organizational as well as symbolic reasons.
General reference works on the order's history describe Portal, in this way, as carrying more documented institutional weight than its lack of a Tree of Life number might otherwise suggest, its symbolic role as a threshold reinforced by the real organizational disputes that played out around exactly this point in the sequence.