iTS 1.0+)

Data Division

Compaq NonStop™ Pathway/iTS SCREEN COBOL Reference Manual—426750-001

5-35

Field-Characteristic Clauses

ADVISORY Clause

The ADVISORY clause identifies a single output or input-output field as the field to be

used for informational and error messages generated by the TCP.

Every base screen should have an advisory field. The field should be alphanumeric with

a size of at least 35 characters. Error messages that appear in this field are described in

Appendix A.

An overlay screen must not have an advisory field.

The ADVISORY clause cannot be associated with a field that allows only double-byte

data.

For terminals in conversational mode, an advisory field must be defined for the screen,

or the standard advisory messages are not displayed on the terminal.

AT Clause

The AT clause specifies the location of the field.

line-spec

specifies the line in which the field begins.

column-spec

specifies the column in which the field begins.

Both line-spec and column-spec can appear in the following forms:

numeric-literal

This form represents the line or column relative to the beginning of the screen.

* [ { + | - } numeric-literal ]

This form represents a location relative to the current position. The current position

begins at line 1, column 1 and is advanced to the first available position following a

field after that field is declared.

[ WHEN { ABSENT } { CLEAR } ]

[ { BLANK } { SKIP } ]

[ [ WHEN ] FULL { TAB } ]

[ { LOCK } ]

ADVISORY

AT line-spec, column-spec