Checks if the content item is new or a revision. This variable is set to TRUE by the CHECKIN_NEW_FORM and CHECKIN_SIMILAR_FORM standard services.
Returns TRUE if the content item is new.
Returns FALSE if the content item is a revision to an existing content item.
If the content item is new, a specified service is performed:
<$if isNew$>
    <input type=hidden name=IdcService value="CHECKIN_NEW">
<$endif$>
If the content item is a revision, the original content item author is used:
<$if not isNew$>value="<$dDocAuthor$>"<$endif$>
If the content item is new, the default accounts for the current user are used:
<$if isNew$>
    <$defaultAccounts$>
<$endif$>