With the advent of electronic tuners some decades later, standardization of the placement of "reference mandals" on the qanun began. While Armenian kanuns now employ only equidistant half-tones and Arabic qanuns exact quarter-tones as a result, Turkish kanun-makers went so far as dividing the electroacoustically referenced equal-tempered semitone of 100 cents into 6 equal parts, yielding – for all intents and purposes – 72 equal divisions (or commas) of the octave pitch resolution. Not all pitches of 72-tone equal temperament are available on the Turkish kanun, however, since kanun-makers affix mandals that only accommodate modulations/transpositions popularly demanded by performers. This has subsequently led to the familiar interrupted and irregular pattern of mandals on the Turkish kanun becoming a visual guide for players, in facilitating modal and intonational navigation on an instrument which is ordinarily bereft of pitch markers. Some kanun-makers may also choose to divide the semitone distance from the nut of the lower registers into 7 parts instead for microtonal subtlety (and the highest registers, conversely, into 5 parts due to spacing constraints); but do so at the expense of octave equivalences. Despite the mentioned discrepancies, hundreds of mandal configurations are at the player's disposal when performing on an ordinary Turkish kanun.