🚀 go-pugleaf

My apologies if this is a FAQ.

Using the Find and Change feature of MacWrite, how does one specify non-printable
characters?  Based on my experience with Unix, I tried \t (backslash-t) for tab 
and it worked, but \n (backslash-n) for newline did not.  Also, are there 
equivalents to the Unix regular expression metacharaters to signify that a string
occurs at the start or end of a line?  If these features exist, where would
one find a reference for them?

I am most likely to see replies by e-mail, though I will try to get back to this
newsgroup by week's end.  Thanks a million in advance.

Andrew Robinson