Programs written for and executed with UNIX versions of the runtime up to and
including Version 2.4.0 use hex values 1-8 to display line-drawing characters
on the screen. Runtimes after Version 2.4.0 use hex values offset by one (1).
When older programs are used with runtimes released after Version 2.4.0,
line-drawing characters do not display as expected. To use the old values for
line-drawing characters, set this variable to "1" (on, true, yes).
If the variable is set to "0" (off, false, no) or is not set at all, the
runtime will use the newer offset values. This variable works only for UNIX systems.