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  1. !! +var+ +exec+ +string+
  2. tit:recursion
  3. type:$type_both
  4. syntax:!recursion ``fn'' for ``v''=``v1'' to ``v2'' [step ``st'']\
  5. $ !recursion ``fn'' for ``v'' in ``v1,v2,v3,...''
  6. mean:Computes the outcome of a recursion using the function ``fn'' in which the\
  7.   variable ``v'' is replaced successively by values ``v1'', ..., ``v2''. <p>\
  8.   In the second syntax, the values are given with respect to each item in\
  9.   the list ``v1,v2,...''. </p><p>\
  10.   The function ``fn'' should use the variable ``last'' to indicate the value of the previous \
  11.   recursion step. And the starting value can be put into the WIMS variable\
  12.   <span class="tt">&#36;recursion_start</span>. </p>
  13.