CTRLCHAR: Returning a Non-Printable Control Character

How to:

The CTRLCHAR function returns a nonprintable control character specific to the running operating environment, based on a supported list of keywords. The output is returned as variable length alphanumeric.

Syntax: How to Return a Non-Printable Control Character

CTRLCHAR(ctrl_char)

where:

ctrl_char

Is one of the following keywords.

  • NUL returns a null character.
  • SOH returns a start of heading character.
  • STX returns a start of text character.
  • ETX returns an end of text character.
  • EOT returns an end of transmission character.
  • ENQ returns an enquiry character.
  • ACK returns an acknowledge character.
  • BEL returns a bell or beep character.
  • BS returns a backspace character.
  • TAB or HT returns a horizontal tab character.
  • LF returns a line feed character.
  • VT returns a vertical tab character.
  • FF returns a form feed (top of page) character.
  • CR returns a carriage control character.
  • SO returns a shift out character.
  • SI returns a shift in character.
  • DLE returns a data link escape character.
  • DC1 or XON returns a device control 1 character.
  • DC2 returns a device control 2 character.
  • DC3 or XOFF returns a device control 3 character.
  • DC4 returns a device control 4 character.
  • NAK returns a negative acknowledge character.
  • SYN returns a synchronous idle character.
  • ETB returns an end of transmission block character.
  • CAN returns a cancel character.
  • EM returns an end of medium character.
  • SUB returns a substitute character.
  • ESC returns an escape, prefix, or altmode character.
  • FS returns a file separator character.
  • GS returns a group separator character.
  • RS returns a record separator character.
  • US returns a unit separator character.
  • DEL returns a delete, rubout, or interrupt character.

Example: Using the CTRLCHAR Function to Insert Control Characters Into a String

CTRLCHAR returns a carriage control character in an ASCII environment.

CTRLCHAR(CR)

WebFOCUS

Feedback