MyBB Community Forums

When user post new message, I want to make topic's name bold characters.
is it possible ?

Sure. Admin CP -> Templates -> Modify / Delete -> * YOUR THEME * Expand -> "Forum Display Templates" Expand -> "forumdisplay_thread" Modify/Change New -> Find:

<span>{$prefix} {$gotounread}<a href="showthread.php?tid={$thread['tid']}" class="{$inline_edit_class}" id="tid_{$inline_edit_tid}">{$thread['subject']}</a>{$thread['multipage']}</span>

and replace with

<strong><span>{$prefix} {$gotounread}<a href="showthread.php?tid={$thread['tid']}" class="{$inline_edit_class}" id="tid_{$inline_edit_tid}">{$thread['subject']}</a>{$thread['multipage']}</span></strong>

thank you.. it will be very good.