[doc] file module update

doc/Makefile

@@ -9,8 +9,8 @@ doc:
 		$(RST2HTML) --stylesheet=docstyle.css "$$doc" > "$$doc.html"; \
 	done
 	for modname in $(ls ../src/mig/modules/); do \
-		if [ -r "../src/mig/modules/$modname/doc.rst" ]; then \
-			$(RST2HTML) --stylesheet=docstyle.css "../src/mig/modules/$modname/doc.rst" > "module_$modname.html"; \
+		if [ -r "../src/mig/modules/${modname}/doc.rst" ]; then \
+			$(RST2HTML) --stylesheet=docstyle.css "../src/mig/modules/${modname}/doc.rst" > "module_${modname}.html"; \
 		fi; \
 	done
 	dot -Tsvg -o .files/action_command_flow.svg .files/action_command_flow.dot

doc/module_file.html

@@ -68,6 +68,7 @@
             <h3>1.1   Search Paths</h3>
             <p>A search can have an unlimited number of search paths. Each path is treated as a string. No path expansion or regular expression is permitted in a path string.</p>
             <p>A path can indicate a directory or a file. In the case of a directory, FM will enter the directory structure recursively until its end is reached, or until <cite>maxdepth</cite> is exceeded.</p>
+            <p>While browsing a path, the module will follow symlinks if they are located within the base search path. For example, if the base path is set to '/sys/bus/usb/devices/' and a symlink is found pointing to '/sys/devices', the symlink will <strong>not</strong> be followed because it points to a location outside of the base search path.</p>
             <p>For each path defined in a search, all search filters will be evaluated.</p>
         </section>
         <section id="search-filters">