Item11383: JayenAshar suggested clarification

git-svn-id: http://svn.foswiki.org/trunk@13554 0b4bb1d4-4e5a-0410-9cc4-b2b747904278

core/data/System/VarADDTOZONE.txt

@@ -15,7 +15,7 @@
      The only zones guaranteed to exist are =head= and =script=. Defaults to =head=. 
    * =id= optional, =identifier= for the text being added with the =ADDTOZONE= call, to be used in the =requires= parameter of other =ADDTOZONE= calls.
       * %H% Multiple =ADDTOZONE= calls with the same =id= parameter will simply overwrite the earlier =ADDTOZONE= call.
-   * =requires="..."= optional, comma separated string of =ids= of text within this =zone= that this content should follow when the zone is rendered.
+   * =requires="..."= optional, comma separated string of =ids= of text within this =zone= that this content should follow when the zone is rendered.  The content will be rendered even if a specified =id= is missing.
    * =text="..."= optional, text to be added to the named zone, mutually exclusive with =topic=.
    * =topic="..."= optional, full qualified =web.topic= name that contains the text to be added, mutually exclusive with =text=. Defaults to =%<nop>BASETOPIC%=
    * =section="..."= optional, section of the =topic= to be added,