unnecessary layers

How can I get rid of unnecessary layers? delete & purge are impossible inspite of the fact that there is no object using these layers.
Thank u Michal
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nestled xrefs & blocks or possibly on layouts not in play.
<DIV><FONT face=Arial color=#000080>How can I get rid of unnecessary layers? </FONT></DIV> <DIV><FONT face=Arial color=#000080>delete&nbsp; &amp; purge&nbsp; are impossible inspite of the fact that there is no object using these layers.</FONT></DIV> <DIV><FONT face=Arial color=#000080>Thank u</FONT></DIV> <DIV><FONT face=Arial color=#000080>Michal</FONT></DIV></BLOCKQUOTE></BODY></HTML>
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try wblocking the parts of the drawing you actually want to keep.
<DIV><FONT face=Arial color=#000080>How can I get rid of unnecessary layers? </FONT></DIV> <DIV><FONT face=Arial color=#000080>delete&nbsp; &amp; purge&nbsp; are impossible inspite of the fact that there is no object using these layers.</FONT></DIV> <DIV><FONT face=Arial color=#000080>Thank u</FONT></DIV> <DIV><FONT face=Arial color=#000080>Michal</FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>
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Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
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