Function s = int2let(a) returns a string with a representation in one letter of integer a. If a has a value < 1 or > 26, then a representation in decimal digits is returned. E.g. int2let(3) returns "c". (c) 2026 fabien van mook 2026.08.20 release of this file within package "fvm-miscellaneous" under GNU GPLv3+