Defines a symbol to be treated as 'all other values' before a LOAD/SELECT statement. This is a user-defined variable.
Syntax:
OtherSymbol
Example:
set OtherSymbol='+';
LOAD * inline
[X, Y
a, a
b, b];
LOAD * inline
[X, Z
a, a
+, c];
The field value Y='b' will now link to Z='c' through the other symbol.
