Slight elaboration on the Array interface

Author: lizmat

S16-io.pod

@@ -186,7 +186,7 @@ properties, mainly:
 
  * It must check whether the path exists before changing its value
  * It can only be assigned an absolute path; if you want to make relative 
-   changes, use the Array interface
+   changes, use the Array interface with .push and .pop
 
 $*CWD is specific to the current thread, unlike C<< %*ENVZ<><PATH> >> or the
 native getcwd/chdir path, which are both usually process-wide.