|  |  5.1.71 kill 
See
 defined;
 general_lib.Syntax:kill name
 kill list_of_namesType:none
Purpose:deletes objects.
Example:|  |   int i=3;
  ring r=0,x,dp;
  poly p;
  listvar();
==> // r                              [0]  *ring
==> //      p                              [0]  poly
==> // i                              [0]  int 3
  kill i,r;
  // the variable `i` does not exist any more
  i;
==>    ? `i` is undefined
==>    ? error occurred in or before ./examples/kill.sing line 7: `  i;`
  listvar();
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