STK_OPTIONS_SET sets the value of one or all STK options

 CALL: stk_options_set ('default')

    resets STK's default options.

 CALL: stk_options_set (OPTS)

    sets all options at once using the option structure OPTS.  Such a
    structure can be obtained from stk_options_get.

 CALL: stk_options_set (BLOCKNAME, OPTS)

    sets all the options from a block BLOCKNAME, using the option
    structure OPTS.  Such a structure can be obtained from
    stk_options_get as well.

 CALL: stk_options_set (BLOCKNAME, OPTNAME, OPTVAL)

    sets options BLACKNAME.OPTNAME to the value OPTVAL.

 CALL: OPTS = stk_options_set (...)

    returns the modified option structure, containing all STK's options.

 See also: stk_options_get