• EBCDIC when set to the value of an EBCDIC code page, converts it to ANSI.

• ENCODING specifies the character code set

• IFS list of single-character value of field separator(s).

• ILS the character value(s) or numeric value that marks the end-of-line.

• NR the number of input lines read.

• NF the number of fields split from the input line if IFS is defined.

• REGPOS set to the position where the match was made in the input string.

• REGLEN set to the length of the regular expression matched.

• TABS set to the number of spaces to replace tab characters with, if 0, no replacement.