220⌶ example is for 32bit

[xpqz]

https://dyalog.github.io/documentation/20.0/language-reference-guide/primitive-operators/i-beam/serialise-deserialise-array/

I think the example is for a 32bit or Classic Dyalog. Here's what I get:

      1(220⌶)'ab'
¯33 ¯92 5 0 0 0 0 0 0 0 31 39 0 0 0 0 0 0 2 0 0 0 0 0 0 0 97 98 0 0 0 0 0 0

Example has

      a←'ab'
      b←1(220⌶)a
      b
¯33 ¯108 5 0 0 0 31 39 0 0 2 0 0 0 97 98 0 0

The text does say "may vary with edition", but we should default to 64bit unicode.

[FionaDyalog]

I get the following using 64-bit Unicode::

      a←'ab'
      b←1(220⌶)a
      b
¯33 ¯92 5 0 0 0 0 0 0 0 31 39 0 0 0 0 0 0 2 0 0 0 0 0 0 0 97 98 0 0 0 0 0 0

      1(220⌶)'ab'
¯33 ¯92 5 0 0 0 0 0 0 0 31 39 0 0 0 0 0 0 2 0 0 0 0 0 0 0 97 98 0 0 0 0 0 0

The example should be replaced.

[DyalogRichard]

The numbers really don't matter as far as the docs are concerned - all that is important is that there are "some."

The numbers are "correct": if someone was to copy the numbers from the docs and use them, they would get 'ab' back, even in a 64-bit Unicode interpreter.

      0(220⌶)¯33 ¯108 5 0 0 0 31 39 0 0 2 0 0 0 97 98 0 0
ab

There is really no need to change this; indeed -32-bit was likely used to keep the output as short as possible.