Step and Trace are not built into the Apple IIGS Monitor.
The format for the search command is
\\<search string>\\{<bank>/}<addr1>.<addr2>P
where <search string> is either a series of hexadecimal values or ASCII text
delimited by single or double quotes. In addition, the entire search string
is separated from the search range with backslashes. <Bank> is optional (as
the braces are meant to indicate) and specifies the memory bank in which you
want to search. If you do include a bank number, then you must separate it
from <addr1> with a slash. <addr1> and <addr2> are the start and end of the
memory range of the search.
For example, for look for the location of the Apple IIgs startup message,
type:
\\"Apple IIgs"\\FF/0000.FFFFP
You should get
FF/F914:
as the response.