This function takes a tokenized string and returns the ASCII representation of it. A FISL string tokenized by DB_ParseFISL and then untokenized by DB_UnparseFISL does not, in general, return the same string. A semantically equivalent string is returned, with all redundant parenthesis removed, and/or different spacing or formatting.
Syntax: DB_UnparseFISL(DBBLOCK *dblk, char far *InTOKEN,
int tokenlen, char far *OutFISL, int OutBufSize);
DB_MEMORY Not enough memory to allocate unparsing stack.
DB_COMPLEX Expression too complex to be unparsed.
DB_OVERFLOW Resulting ASCII text overflows OutFISL buffer