I took a look into the .bin file from the lastest firmware from the 713p and found the following htm documents:
a-port.htm atbox.htm banner.htm begin.htm
ddns.htm dhcp.htm dhcplist.htm fwug.htm
h-atbox.htm h-dhcp.htm h-iopf.htm h-misc.htm
h-pmac.htm h-prim.htm h-smap.htm h-spap.htm
h-stat.htm h-wlap.htm index.htm iopf.htm
menu.htm menu_2.htm misc.htm pmac.htm
prim.htm rebo.htm rtab.htm setc.htm
smap.htm snmp.htm spap.htm status.htm
sysinfo.htm syslog.htm syslog2.htm sysp.htm
want.htm wlap.htm wlape.htm wlapinit.htm
x.htm x.htm
Interesting pages so far include:
sysp.htm ...some MTU settings
setc.htm ...change wireless channels?
syslog2.htm ...more verbose logs