 For Kawan Bergeloet , Soeman wrote in Indonesian , a language based on formal Malay . His diction and phrasing was strongly influenced by his east Sumatran background , with little influence from the language as spoken in Java . Rosidi considers his language to flow more easily than Kasim 's . John Wolff , the author of Indonesian Readings , sees Soeman as using " flourishes which echo folk @-@ tale stories " . 
