viper: Yanking

 
 4.2.8 Yanking
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 ‘<count> y<move>’
      Yank from begin to endpoint of <count><move>.
 ‘<count> "<a-z>y<move>’
      Yank from begin to endpoint of <count><move> to register.
 ‘<count> "<A-Z>y<move>’
      Yank from begin to endpoint of <count><move> and append to
      register.
 ‘<count> yy’
      <count> lines.
 ‘<count> Y’
      Idem (should be equivalent to ‘y$’ though).
 ‘m<a-z>’
      Mark the cursor position with a letter.
 ‘[<a-z>’
      Show contents of textmarker.
 ‘]<a-z>’
      Show contents of register.
 ‘<count> ["<a-z1-9>]p’
      Put the contents of the (default undo) buffer <count> times after
      the cursor.  The register will be automatically down-cased.
 ‘<count> ["<a-z1-9>]P’
      Put the contents of the (default undo) buffer <count> times before
      the cursor.  The register will