I'd imagine in this sense of the word it's a must...
If the defendant asked to put up for security of costs refuses they can apply to the court to have the plaintiff secure the costs... The other party with standing...
Printed copy · Anthology Volume 9, page 954 · cut by a page breakPrinted copy from The Tender For Law Anthology, Volume 9, page 954 (printed 13 June 2014). Added by this site; not part of the Facebook export. A page break in the printout cut off the beginning of this comment, with its name.