COBOL Manual for TNS/E Programs (H06.08+, J06.03+)

names. HP COBOL relaxes this restriction. The use of each particular system-name is limited to

contexts appropriate for its category. The few minor restrictions on duplicate usages of system-names

are discussed in SPECIAL-NAMES Paragraph.

In HP COBOL, system-names are either resource names or file names in the form used by the

operating system.

The types of system-names are:

• Resource names

A resource name is a mnemonic-name that identifies part of the environment:

Environment Part IdentifiedResource Name (mnemonic-name)

Operator consoleCONSOLE

Home terminalMYTERM

Carriage-control tape channelsCHANNEL-1

through

CHANNEL-15

External switchesSWITCH-1

through

SWITCH-15

Native character setsDANSK-NORSK

DEUTSCH

ESPANOL

FRANCAIS-QW

FRANCAIS-AZ

SVENSK-SUOMI

USASCII

For more information on resource names, see SPECIAL-NAMES Paragraph.

• Operating system file names

The NonStop operating system supports two file systems: the Guardian file system and the

Open System Services (OSS) file system.

A Guardian file name identifies one of these:

◦ Disk file

◦ Input or output device (such as a line printer)

◦ Process (such as a requester)

◦ Spooler collector

◦ Special file name (such as a temporary disk file)

For details on Guardian file names, see the Guardian Procedure Calls Reference Manual.

66 Language Elements