,command c a1 a2 a3 =
  a -href=<( ,c
             <<?a1=>> ,a1
             <<?a2=>> ,a2
             <<?a3=>> ,a3 )>
    ,BODY

,command cmd param1 param2 param3
  <<My command link>>

,command2 c a1 a2 a3 =

  a -href=<(,hrefval)>
    ,BODY

  # build href value from arguments
  ,hrefval = 
    ,c
    <<&a1=>> ,a1
    <<&a2=>> ,a2
    <<&a3=>> ,a3     

,command2 cmd param1 param2 param3
  <<My command link>>