Writing Real Programs in DCL, Second Edition
A complete how-to guide for programming in DCL for the OpenVMS operating system.
TABLE OF CONTENTS Writing Real Programs in DCL, Second Edition
Section F.3: File Layout
F.3 File Layout
A MODL distribution file is an indexed file containing three types of records. The file has a single key, which occupies the first field in every record.
A MODL file has a header record, which describes the file and contains information that pertains to the entire file, such as the mailing agent. Table F.1 describes the fields in the header record.
Table F.1: MODL file: Header record
| Position | Size | Type | Description |
|---|---|---|---|
| 0 | 16 | String | The key of the header record is !HEADER!. |
| 16 | 12 | String | The user name of the user who created the file. |
| 28 | 17 | String | The date and time when the file was created. |
| 45 | 32 | String | The title of the file. |
| 77 | 32 | String | The mailing agent, or blank if no agent is used. |
Table F.2: MODL file: Keyword record
| Position | Size | Type | Description |
|---|---|---|---|
| 0 | 16 | String | The key of the keyword record consists of a sharp sign ( #) followed by the keyword. |
| 16 | 12 | String | The user name of the user who registered the keyword. |
| 28 | 17 | String | The date and time when the keyword was registered. |
| 45 | 32 | String | The title of the keyword. |
Table F.3: MODL file: User record
| Position | Size | Type | Description |
|---|---|---|---|
| 0 | 16 | String | The key of the user record consists of the user name. |
| 16 | 12 | String | The user name of the user who registered this user. |
| 28 | 17 | String | The date and time when the user was registered. |
| 45 | 32 | String | The user's... |
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