The readability of the optical storage medium may be adjustably limited by a temporally defined deterioration of the readability, more precisely of the reflectivity of the reflective information layer.

Therefore the deterioration of the readability depends on the time after the first use.

Reading codes (bars, QR, BI-DI, Datamatrix, etc.) to check for the presence, legibility, traceability, etc.

Legible font coupled with simple geometric shapes (lines, points, rectangles, circles) will continue to hold ground.

Granted, this only works if you are using a readable font type like Arial or Times.

An extended grapheme cluster is a sequence of one or more Unicode scalars that (when combined) produce a single human-readable character.

Each character stored in a string is a sequence of one or more unicode scalars that, when combined, produce a single human readable character.

The property numbers are then compared (4) with bands of the available property range and a computer-readable character, such as a letter of the alphabet, is ascribed to each of the property values.

I am confident therefore that you will agree that I am right to be upset and that you will in fairness give my complaint a clear and legible place in your columns.

The pieces are readable, take on a sense, only when assembled; in isolation, a puzzle piece means nothing — just an impossible question, an opaque challenge.