What's that funny character?

Run this code:

CREATE CURSOR foo (line c(100))

LIST STRUCTURE TO t.txt

APPEND FROM t.txt sdf

GO RECNO()-1

FOR i = 1 TO LEN(TRIM(line))

      ?i,SUBSTR(line,i,1),ASC(SUBSTR(line,i,1))

ENDFOR

It produces t.txt which looks like this:

Structure for table: E:\FOXTEMP\00003HU100WC.TMP

Number of data records: 0

Date of last update: / /

Code Page: 1252

Field Field Name Type Width Dec Index Collate Nulls Next Step

    1 LINE Character 100 No

** Total ** 101

What is the character at position 6 of the field line?