Can I use these to write APL code?
Viewing post in Typeface: Angel-Sealing Glyphs comments
Had to look this up, and the answer's theoretically yes if it was modified a bit. I'd need to double the glyphs in the font to cover all of ASCII and all the APL-specific syntax (using this IBM table of GCGIDs as a guide) and do a little unicode editing to cover the different dialects. It probably wouldn't take me too long to do if I made the new glyphs by flipping/rotating the old ones. The downside is, only ASCII and APL characters would appear as the angel-sealing glyphs; anything else would probably appear in a system font.