https://forums.autodesk.com/t5/inventor-forum/revision-tag-user-defined-symbol/m-p/5553108#M383196 <P>Thank you, but I still cannot open your file. I am told that I need to find a&nbsp;program to open it, but I cannot install anything on my computer except the IT guys.</P><P>&nbsp;</P><P>I have tried a few times with the way you gave me&nbsp;in your previous post. It doesn't work. Could you please use an&nbsp;exaggerate way to try it, for example, the&nbsp;triangle side is 1" to see if your way works?</P><P>&nbsp;</P><P>Have a nice day,</P><P>Baishihu</P> Mon, 23 Mar 2015 14:04:27 GMT Anonymous 2015-03-23T14:04:27Z