diff --git a/Modules/MIP_FILES.pck b/Modules/MIP_FILES.pck
index 20ff506..bb9bb36 100644
--- a/Modules/MIP_FILES.pck
+++ b/Modules/MIP_FILES.pck
@@ -5,6 +5,13 @@ create or replace package MIP_FILES is
   -- Purpose : Handle files for the webMIP system
 
   -- Public function and procedure declarations
+function drawing_file_exists(p_drwg_code varchar2) return boolean;
+function update_file_association(p_uri in varchar2,
+                                p_description in varchar2,
+                                p_docu_type in varchar2,
+                                p_qute_id in number,
+                                p_enqu_id in number,
+                                p_drwg_code in varchar2) return boolean;
 function set_file_association(p_uri in varchar2,
                               p_description in varchar2,
                               p_docu_type in varchar2,
@@ -53,6 +60,7 @@ create or replace package body MIP_FILES as
    %param p_uri - the uri of the file (the contents of the name column in APEX application files)
    %param p_description - description of the file, will be set in documents and document_roles table
    %param p_docu_type - INDO (held within webmip db), EXDO (held outside webmip), FIDO (on file system)
+   %param p_rt_code - type of role for docment eg 'ENQUIRY SUPPORTING DOC' see role types table
    %param p_qute_id - the quote id if applicable otherwise supply null
    %param p_enqu_id - the enquiry id if applicable otherwise supply null
    %param p_drwg_code - the drawing code if applicable otherwise supply null