: Because it is "Black" (extra-bold), it is highly visible on low-resolution displays like the 32x16 P10 panels.
const GFXfont ArialBlack16 PROGMEM = (uint8_t *)ArialBlack16Bitmaps, (GFXglyph *)ArialBlack16Glyphs, 0x20, // First ASCII character (Space) 0x7E, // Last ASCII character (~) 16 // yAdvance (Line height) ; arial black 16.h library