el. 
The <code id='code26458'
>bigloo-compiler-debug</code> is automatically controlled by the compiler 
command line <code id='code26459'
>-g</code> option (see <a href="bigloo-15.html#Command-Line-Parsing" class="inbound">Command Line Parsing</a>). <br/><br/>When a program is compiled in debug mode <code id='code26462'
><em id='it26461'
>lvl</em></code>, the compiler introduces a 
call to <code id='code26463'
>(bigloo-debug-set! lvl)</code> before the evaluation of the
first expression.<br/><br/>The <code