what means this symbol

[pcwortex]

Hi community,

Could somebody for me explain, what means this symbol. I have attached picture and this symbol drawn red color.

[Warmingup1953 · Accepted solution]

Chain links - this indicates that the part was imported and is linked to its original reference

[pcwortex]

Insert ->Imported derive it is not same?

[seth.madore]

No, Derive and XREF (external reference), while having some similarities in the end result (bringing another model into the design) do have significant differences, with Edit in Place (EIP) being the bigger difference. EIP is possible with XREF, not with Derive.