[texworks] inquiry about Block Selection

[阿支]

Hello,
      I have tried Texworks on my Debian, and was satisfied with its clean and powerful functions, especially its forward and inverse search with pdf.  But I found it can not select columns (Block Selection). I know in Kile and Kate, I can select blocks. But I do not find a good way to inverse-search from pdf to source file.  So, can you tell me how to block-select in Texworks?
     Many thanks.

Yours sincerely,
YHzhi
Yunnan University
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