What trenzterra was asking for is an alias that can choose double-digit letters, like AA through BZ, as you might find in a card index or spread sheet.

I dont see any problem with the consistancy a random letter or number is chosen by $rand. The following experiment tests the consistancy that $rand chooses a random letter from 'a' through 'z'.

The Code:
//var %n = 2600 | WHILE %n { hinc -m rand $r(a,z) | dec %n }

The Results, with 2600 loops (each letter should average 100 hits):
a 121, b 94, c 92, d 99, e 85, f 103, g 104, h 88, i 99, j 95, k 94, l 115, m 91,
n 99, o 101, p 118, q 105, r 95, s 96, t 92, u 93, v 107, w 99, x 110, y 102, z 103.

The Results, with 260000 loops:
a 10147, b 10130, c 10028, d 9815, e 9974, f 10080, g 9947, h 9983, i 9812,
j 9846, k 9965, l 9697, m 10057, n 10129, o 9964, p 10063, q 10054, r 10015,
s 10026, t 10016, u 10104, v 10028, w 9999, x 10009, y 10124, z 9988.

If anything, $rand is more likely to pick the first letter the most, not the least.
Otherwise, it's completely even distribution.

- Raccoon


Well. At least I won lunch.
Good philosophy, see good in bad, I like!