40 lines
1.5 KiB
HTML
40 lines
1.5 KiB
HTML
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<HTML>
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<HEAD>
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<TITLE>STk error help (13-Sep-1995)</TITLE>
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<!-- Changed by: Erick Gallesio, 13-Sep-1995 -->
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</HEAD>
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<BODY>
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<H1><IMG ALIGN=BOTTOM SRC="Img/note.gif">STk stack window help</H1>
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<IMG ALIGN=TOP SRC="Img/colorline.gif">
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<BR>
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This window allows you to see the stack when an error occurs. Two
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sub-windows compose it.
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<UL>
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<LI> the topmost window (labeled <strong>Stack content</strong>)
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shows the contents of the stack when the error occurred. Each line
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contains the parameters passed to an invocation of the <TT>eval</TT>
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procedure (last call to eval is on the first line).
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<BR>
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This window is also made of two sub-windows.
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<UL>
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<LI> On the left side is the environment in which the expression
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must be evaluated. Click on an item of this list to view
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the bindings defined in this environment.
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<LI> On the right side, there is the expression to evaluate. Clicking on
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an item of this list sets the <em>Listener</em>
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default environment to the environment of this expression.
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</UL>
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<LI> the bottom window (labeled <strong>Listener</strong>) allows you to
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interact with the <EM>STk</EM> interpreter. The listener reads an
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expression in this window, evaluates it (in the environment previously
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selected in the above <EM>Stack window</EM>) and prints its result in
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this window.
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</UL>
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<hr>
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<A HREF="STk-hlp.html"><IMG ALIGN=TOP SRC="Img/home.gif"> Go to top</A>
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</BODY>
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</HTML>
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