fdc5e7d5_Robots_txt_Tutorial__3
[0] rel=canonical [1] yes. multiple versions of the page may be crawled and may appear in the index [2] pages still appear in the index. this is taken as a hint rather than a directive. [4] With tools like 301 redirects and rel=canonical there might be some small amount of PageRank bleed, particularly with rel=canonical since both versions of the page stay in the search index. [3] 
PageRank should accumulate on destination target
Robots.txt Tutorial
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