extending data

I want to add extra data to a standard entity in the DXF code - like it would be real handy to have a line which represents a piece of pipe to
have a number associated with it for GPM.
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<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
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HiHo; Use extended entity data.

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

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