Index: openacs-4/packages/acs-api-browser/www/procs-file-view.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-api-browser/www/procs-file-view.tcl,v
diff -u -r1.8.2.4 -r1.8.2.5
--- openacs-4/packages/acs-api-browser/www/procs-file-view.tcl	30 Dec 2015 12:54:35 -0000	1.8.2.4
+++ openacs-4/packages/acs-api-browser/www/procs-file-view.tcl	13 May 2016 07:08:49 -0000	1.8.2.5
@@ -3,10 +3,10 @@
 
     @cvs-id $Id$
 } {
-    version_id:naturalnum,optional
+    version_id:naturalnum,optional,notnull
     { public_p:boolean "" }
     path:path,trim
-    source_p:boolean,optional,trim
+    source_p:boolean,optional,trim,notnull
 } -properties {
     title:onevalue
     context:onevalue