You cannot indent a field and force a space above it, or block quote (highlight) areas of text on the wiki, see here: https://wiki.freebsd.org/Handbook/Introduction#The_FreeBSD_Development_Model_.281.3.3.29 Vs: https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/history.html
Plugins/Macros aside, wikis are limited in their syntax/markup (for obvious reasons). As such, customising rendering may not be possible for all cases compared to other documentation/markups forms (such as docbook with stylesheeting for the handbook). However, it may be possible to achieve a similar effect using: a) Admonitions, but use of these should be limited in most cases. See Also: https://moinmo.in/HelpOnMoinWikiSyntax#Admonitions or b) {{{ quote }}} Which can be indented