Am 29.10.2012 um 13:31 schrieb Jeong Dal :

Dear Marco and Wolfgang,

Thank you for solutions.

I have tried \startalignment … \stopalignment, but it is not working. Does it work as same as \midaligned?

No, both commands work different. With \startalignment you can set a different \setupalign setting for a certain part of your document and it does work for longer text but \midaligned works only for content which fits on a single line. In the following example you can see the text in the alignment environment is broken across line but the text in \midaligned is placed in one long line which exceeds the page dimensions. \starttext \startalignment[middle] \input ward \stopalignment \blank \midaligned{\input ward } \stoptext

\startcontent … \stopcontent, \startcaption … \stopcaption seem to me a new commands. Is every command in ConTeXt changed as a form of "\start … \stop"?

No, not all commands are available in a start/stop form and even when it doesn’t mean you can replace a command with a environment, e.g. \quotation{…} is different from \startquotation … \stopquotation but there will be more commands in the future which can be used as \start… and \stop… Wolfgang