It returns a string containing n duplicates of the input
       character.

1  –  Input

       This function takes two input arguments separated by a comma: a
       number and a character.

2  –  Output

       A string containing the selected number of input characters.

3  –  Example

       DTR> READY CDD$TOP.DTR$LIB.DEMO.YACHTS ;
       DTR> FOR FIRST 3 YACHTS SORTED BY PRICE ASCENDING
       CON> PRINT BUILDER, MODEL, FN$STR_CHARN(300,FN$ICHAR("_"))("NOTES") USING T(30) ;

       MANUFACTURER   MODEL                NOTES

        BUCCANEER   270        ______________________________
                               ______________________________
                               ______________________________
                               ______________________________
                               ______________________________
                               ______________________________
                               ______________________________
                               ______________________________
                               ______________________________
                               ______________________________
        PEARSON     26W        ______________________________
                               ______________________________
                               ______________________________
                               ______________________________
                               ______________________________
                               ______________________________
                               ______________________________
                               ______________________________
                               ______________________________
                               ______________________________
        BUCCANEER   320        ______________________________
                               ______________________________
                               ______________________________
                               ______________________________
                               ______________________________
                               ______________________________
                               ______________________________
                               ______________________________
                               ______________________________
                               ______________________________

       DTR>