OK, found this on the net. Looks like a special font was being used to create these 018n codes.
Now I can do a search & replace with lisp.
eSize[0][0]=0xFEFF; /* 1/16 */
eSize[0][1]=0x0187;
eSize[1][0]=0xFEFF; /* 1/8 */
eSize[1][1]=0x0183;
eSize[2][0]=0xFEFF; /* 3/16 */
eSize[2][1]=0x0188;
eSize[3][0]=0xFEFF; /* 1/4 */
eSize[3][1]=0x0181;
eSize[4][0]=0xFEFF; /* 5/16 */
eSize[4][1]=0x0189;
eSize[5][0]=0xFEFF; /* 3/8 */
eSize[5][1]=0x0184;
eSize[6][0]=0xFEFF; /* 7/16 */
eSize[6][1]=0x018A;
eSize[7][0]=0xFEFF; /* 1/2 */
eSize[7][1]=0x0180;
eSize[8][0]=0xFEFF; /* 9/16 */
eSize[8][1]=0x018B;