iTS 1.0+)

Data Division

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

5-91

Clauses in Message Description Entry

A field can be described with both a TO and a FROM clause. If you specify both

clauses, each can have a different data name. The particular clause determines the

general type of the field (input, output, or input-output) as indicated in Table 5-13.

Assume the following Working-Storage and Message Sections:

WORKING-STORAGE SECTION.

01 W-FLD1 PIC X(2).

01 W-FLD2 PIC X(2).

01 W-FLD3 PIC 9(18) COMP.

01 W-FLD4 PIC X(4).

MESSAGE SECTION.

01 MSG1 PIC X(2) TO W-FLD1.

01 MSG2 PIC X(5) FROM W-FLD2 MESSAGE FORMAT IS VARYING1.

01 MSG3 PIC X(8) USING W-FLD3 MESSAGE FORMAT IS VARYING2.

01 MSG4 PIC X(4) FROM W-FLD1 TO W-FLD4

MESSAGE FORMAT IS VARYING1.

Notice that W-FLD3 contains eight characters, the amount required by a COMP field

whose size is between 9(10) and 9(18).

1. The fixed format field MSG1 receives a message containing the two characters AB.

These characters are then passed to W-FLD1:

Table 5-13. Association Clauses and Message-Field Types

Association Clause Message-Field Type

TO clause only Input

FROM clause only Output

USING clause Input-Output

TO and FROM clause Input-Output

013CDT .CDD

MSG1 W-FLD1

AB AB