NET/MASTER Network Control Language (NCL) Programmer's Guide

Contents
106160 Tandem Computers Incorporated xi
Scope and Error Handling 7-16
The Scope of Core Statements 7-16
Scope and Replacing an Error Handler 7-17
Scope and Searching for an Error Handler 7-18
Scope and Recovering From an Error 7-19
Scope and Sharing Variables 7-20
Scope and Releasing an Error Handler 7-20
System Variables Containing Error Information 7-21
Using the &SYSMSG Variable 7-22
System-Defined Error Handlers for Specific Conditions 7-23
The ARITH_ERROR Error Handler 7-24
The FILE_ERROR Error Handler 7-24
The FLUSH_ERROR Error Handler 7-24
The LABEL_ERROR Error Handler 7-24
The LOADFAIL_ERROR Error Handler 7-25
The LOOPING_ERROR Error Handler 7-25
The PANEL_END Error Handler 7-25
The PANEL_ERROR Error Handler 7-26
The PANEL_RETURN Error Handler 7-26
The PANEL_SKIP_PMENU Error Handler 7-26
The PSEND_ERROR Error Handler 7-27
The RANGE_ERROR Error Handler 7-27
The STRING_ERROR Error Handler 7-27
The TYPE_ERROR Error Handler 7-27
The VARIABLE_ERROR Error Handler 7-28
The VERB_ERROR Error Handler 7-28
Section 8 Executing NCL Procedures
Execution Techniques 8-1
Explicit Execution 8-1
Implicit Execution 8-4
Using Timer Commands to Execute NCL Procedures 8-6
Using Virtual Users to Execute NCL Procedures 8-7