SET(MAX_LINES)

 Specifies the maximum number of lines the buffer can contain.  If this
 number is exceeded, VAXTPU deletes lines from the beginning of the buffer
 to make room for new lines.

 Syntax

    SET (MAX_LINES, buffer, integer)

 Parameters

    buffer     The buffer for which you want to set or change the maximum
               lines.

    integer    The maximum number of lines for the buffer.  If you
               specify 0, the feature is turned off; that is, VAXTPU does
               not check for the maximum number of lines.

 Example

    SET (MAX_LINES, message_buffer, 20);

 Sets the maximum number of lines in the message buffer to 20, so that only
 recent messages are kept in the buffer.