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<ul><li>You can add anywhere in a module file writen in wims language
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<ul><li>You can add anywhere in a module file writen in wims language
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(this excludes for instance shell files) a line starting with the
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(this excludes for instance shell files) a line starting with the
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command $emph !debug$emphend , followed by a string that may contain
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command $emph !debug$emphend , followed by a string that may contain
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variable names (preceeded by a $$ sign) to get their values. For
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variable names (preceeded by a $$ sign) to get their values. For
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instance :<br/> $emph !debug The score of $$user is $$score $emphend
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instance :<br> $emph !debug The score of $$user is $$score $emphend
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<br/> If the program execution tries to execute such a line, it will
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<br> If the program execution tries to execute such a line, it will
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stop there, displaying an error message containing your string with
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stop there, displaying an error message containing your string with
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the variable names replaced by their values. In the above example, the
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the variable names replaced by their values. In the above example, the
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program displays for instance a debugging message containing <br/>
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program displays for instance a debugging message containing <br>
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$emph The score of Ted Watson is 7$emphend
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$emph The score of Ted Watson is 7$emphend
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</li><li>
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</li><li>
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All files and line numbers processed when we issue a wims command
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All files and line numbers processed when we issue a wims command
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can be stored for debugging purposes in a special file named trace.txt
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can be stored for debugging purposes in a special file named trace.txt
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in the tmp/sessions/XXXX directory where XXXX is the session
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in the tmp/sessions/XXXX directory where XXXX is the session