This is a crosspost from the Mathematics Stack Exchange, I thought I'd ask here as well in case anyone knows. In the STIX package there is a character called
\rangledownzigzagarrow, which corresponds to U+237C ⍼ RIGHT ANGLE WITH DOWNWARDS ZIGZAG ARROW in the Miscellaneous Technical Unicode block. What is it meant to represent? Are there examples of its usage?
According to the STIX project, the character is copied from ISO/IEC TR 9573-13:1991, which in turn obtained the glyph from the Association for Font Information Interchange's registry for glyphs in accordance with ISO/IEC 10036. (I've written up the trail here for the curious.) Going by this email from Asmus Freytag, it sounds like anyone could have registered a glyph with AFII for a fee, so the trail kind of goes cold there.