iX Computer Systems - Edition 1 (32715-90001)

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unit that contains it. The OPTION NOTRACE statement disables the trace

statements in the program unit that contains it. If a program unit

contains neither an OPTION TRACE nor an OPTION NOTRACE statement, the

global option applies (its default is GLOBAL OPTION TRACE).

Syntax

OPTION TRACE

{NO TRACE}

OPTION {NOTRACE }

The OPTION TRACE and OPTION NOTRACE statements can appear anywhere in a

program unit. The highest-numbered TRACE statement affects the entire

program unit the entire time that the program unit is executing.

Example

100 TRACE LINES

110 READ A,B

120 IF A=B THEN GOTO 140

130 PRINT "A<>B"

140 PRINT "A=B"

200 OPTION TRACE

300 OPTION NOTRACE

999 END

In the above program, the OPTION NOTRACE statement at line 300 disables

the trace statement at line 100, despite the OPTION TRACE statement at

line 200. HP Business BASIC/XL does not trace the branch from line 120

to line 140 when the program runs.

The Program Analyst

The interpreter maintains extensive data structures that describe the

current program. That information can be valuable for developing and

maintaining programs. The Program Analyst is an environment that makes

this information available and provides tools for analyzing the

information. The Program Analyst can be used for design optimization,

memory usage analysis, program statistics information, and optimization

of subunit sizes.

ANALYST

The ANALYST command enters the Program Analyst environment. The

following conditions must be met to successfully run the Program Ana-

lyst: