{def loops_for
 {lambda {:i :n}
  {if {>= :i :n}
   then (end of loop)
   else {br}{S.map {lambda {} *} {S.serie 0 :i}}
        {loops_for {+ :i 1} :n}}}}
-> loops_for

{loops_for 0 5}
->
*
* *
* * *
* * * *
* * * * * (end of loop)

a simpler way, using {S.map function {S.serie start end [step]}

{S.map {lambda {:i} {br}
{S.map {lambda {:i} *}
{S.serie 1 :i}}}
{S.serie 1 5}}
->
 *
 * *
 * * *
 * * * *
 * * * * *