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This chapter provides detailed descriptions of the commands supported by the BASIC

Compiler. In addition to the commands commonly used in traditional versions of BASIC, a

number of commands that deal with specific hardware features of the portable terminals are

supported. These commands are within the user's BASIC programs to perform a wide

variety of tasks, such as communications, LCD, buzzer, scanner, file manipulation, etc.

They are categorized and described in this chapter by their functions or the resources they

work on.

Some commands are suffixed with a dollar sign, $, which means a string is returned with the

command. The compiler will accept these commands with or without the dollar sign.

However, the dollar sign will be suffixed to these commands in this manual and the sample

program.

The description for each BASIC command consists of five parts, Purpose, Syntax, Remarks,

Example and See Also, which are further described below.

 Purpose

The purpose of the command is briefly explained.

 Syntax

According to the following conventions, the command syntax is described.

CAPS

BASIC keywords are indicated by capital letters.

Italics Items in Italics represent variable information to be supplied by the user.

[ ]

Square brackets indicate optional parameters.

{ }

Braces indicate an item may be repeated as many times as necessary.

| Vertical bar indicates alternative option.

 Remarks

Additional information regarding correct command usage is provided.

 Example

Various ways of using the statement are presented, including applicable and unusual modes

of operation.

C H A P T E R 5

BASIC Commands

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Metrologic IS1000 Series Guía de usuario Pagina 28