Notepad++ as a log viewer

lang_logfile.xml

<NotepadPlus>
    <UserLang name="Log file" ext="log" udlVersion="2.1">
        <Settings>
            <Global caseIgnored="no" allowFoldOfComments="no" foldCompact="no" forcePureLC="0" decimalSeparator="2" />
            <Prefix Keywords1="no" Keywords2="no" Keywords3="no" Keywords4="no" Keywords5="no" Keywords6="no" Keywords7="no" Keywords8="no" />
        </Settings>
        <KeywordLists>
            <Keywords name="Comments">00 01 02 03 04</Keywords>
            <Keywords name="Operators1">- . , : ; ( ) [ ] =</Keywords>
            <Keywords name="Keywords1">ERROR FATAL</Keywords>
            <Keywords name="Keywords2">DEBUG</Keywords>
            <Keywords name="Keywords3">INFO</Keywords>
            <Keywords name="Keywords4">WARN</Keywords>
            <Keywords name="Delimiters">00&quot; 01 02&quot; 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23</Keywords>
        </KeywordLists>
        <Styles>
            <WordsStyle name="DEFAULT" fgColor="FFFFFF" bgColor="FFFFFF" colorStyle="0" fontName="Courier New" fontStyle="0" nesting="0" />
            <WordsStyle name="NUMBERS" fgColor="007500" bgColor="FFFFFF" fontName="" fontStyle="0" nesting="0" />
            <WordsStyle name="KEYWORDS1" fgColor="000000" bgColor="FF0000" fontName="" fontStyle="1" nesting="0" />
            <WordsStyle name="KEYWORDS2" fgColor="000000" bgColor="0080FF" fontName="" fontStyle="1" nesting="0" />
            <WordsStyle name="KEYWORDS3" fgColor="000000" bgColor="00FF00" fontName="" fontStyle="1" nesting="0" />
            <WordsStyle name="KEYWORDS4" fgColor="000000" bgColor="FFFF00" fontName="" fontStyle="1" nesting="0" />
            <WordsStyle name="OPERATORS" fgColor="000000" bgColor="FFFFFF" fontName="" fontStyle="0" nesting="0" />
            <WordsStyle name="DELIMITERS1" fgColor="888888" bgColor="FFFFFF" fontName="" fontStyle="0" nesting="0" />
        </Styles>
    </UserLang>
</NotepadPlus>