If the characters are
not available on all operating environments, for example, 0–9,
a–z, A–Z, they must be represented in UESC. $UESCw. can be nested.
Comparisons
The $UESCw. format performs processing that is opposite
of the $UESCEw. format.
Example
This example uses the
Japanese Shift_JIS encoding, which is supported under the UNIX operating
system.