Hello,<br/><br/>Such usage is now widely regarded as acceptable in all but the most formal writing.<br/><br/>I am not able to understand the meaning of this sentence, specially after "but".<br/><br/>Does it mean "Such usage is now widely regarded as acceptable in all " but "such usage is not acceptable in the the most formal writing"<br/><br/>Could any one here make it clear?<br/>Thanks.