svnlite was introduced with FreeBSD 10: http://svnweb.freebsd.org/base?view=revision&revision=251886 https://wiki.freebsd.org/WhatsNew/FreeBSD10 The handbook still recommends installing/using 'devel/subversion'/svn: https://www.freebsd.org/doc/handbook/svn.html https://www.freebsd.org/doc/handbook/synching.html [+ maybe more occurences] Which is no bug at all - but devel/subversion comes with plenty of {probably unwanted/unnecessary} dependencies, depending on the configuration. So skip installing devel/subversion and using the builtin svnlite might be the 1st choice.
There is also numerous references in the FreeBSD Documentation Project Primer for New Contributors: https://www.freebsd.org/doc/en/books/fdp-primer/index.html
Also here: https://www.freebsd.org/doc/handbook/ports-using.html There is really no need to fetch the ports using devel/subversion when svnlite co https://svn.FreeBSD.org/ports/head /usr/ports works just fine.
Current Handbook recommendation is more clear now (chapter A.3.3). Thankyou all! :)