
  NNAAMMEE

  set - Read and write variables

  SSYYNNOOPPSSIISS

  sseettvarName?value?

  DDEESSCCRRIIPPTTIIOONN

  Returns the value of variable varName. If value is specified, then set the
  value of varName to value, creating a new variable if one doesn't already
  exist, and return its value. If varName contains an open parenthesis and
  ends with a close parenthesis, then it refers to an array element: the
  characters before the first open parenthesis are the name of the array, and
  the characters between the parentheses are the index within the array.
  Otherwise varName refers to a scalar variable. Normally, varName is
  unqualified (does not include the names of any containing namespaces), and
  the variable of that name in the current namespace is read or written. If
  varName includes namespace qualifiers (in the array name if it refers to an
  array element), the variable in the specified namespace is read or written.

  If no procedure is active, then varName refers to a namespace variable
  (global variable if the current namespace is the global namespace). If a
  procedure is active, then varName refers to a parameter or local variable
  of the procedure unless the _gg_ll_oo_bb_aa_ll command was invoked to declare varName
  to be global, or unless a _vv_aa_rr_ii_aa_bb_ll_ee command was invoked to declare varName
  to be a namespace variable.

  SSEEEE AALLSSOO

  _ee_xx_pp_rr, _pp_rr_oo_cc, _tt_rr_aa_cc_ee, _uu_nn_ss_ee_tt

  KKEEYYWWOORRDDSS

  _r_e_a_d, _w_r_i_t_e, _v_a_r_i_a_b_l_e
  ---------------------------------------------------------------------------

    _C_o_p_y_r_i_g_h_t  1993 The Regents of the University of California.
    _C_o_p_y_r_i_g_h_t  1994-1996 Sun Microsystems, Inc.
    _C_o_p_y_r_i_g_h_t  1995-1997 Roger E. Critchlow Jr.

