That's correct. It's not set out in the act. It is one of the privileges of the House, in the same way that the House might have a privilege with respect to defamatory statements that might be made in the House, control over publication, the ability to exclude strangers from the House, that kind of matter. It's an inherent power, an inherent privilege of the Legislative Assembly.
Acting Law Clerk (Ms. Stewart) on Committee Motion 61-12(7): To Amend Clause 2 Of Bill 32, Defeated
In the Legislative Assembly on June 12th, 1995. See this statement in context.
Committee Motion 61-12(7): To Amend Clause 2 Of Bill 32, Defeated
Item 19: Consideration In Committee Of The Whole Of Bills And Other Matters
June 11th, 1995
Page 1273
Acting Law Clerk Ms. Stewart
See context to find out what was said next.