Brightmoonese orthography employs a unique moraic syllabary. It developed from cursive forms of ancient logograms, an abandoned script whose knowledge was eventually lost to time. Some letter forms were derived directly from a the cursive form of a logogram, while others were modifications based on other letters or and a few were added as a priori inventions.
The Brightmoonic script features 110 letters. All letterforms are strictly unicursal; that is, they can be written in a single stroke without lifting the pen. Letterforms are formed from a combination a few basic stroke gestures, including the curve, the loop, and the cusp. Every letterform must include at least one loop. Some letters have variant glyphs, such as those substituting a small loop for a cusp or viceversa (a cusp is treated as a mere stylistic variant of a small loop, a cusp being the limit case of a loop when its radius tends to zero).