diff --git a/all.sas b/all.sas
index 629b233..52c0a47 100644
--- a/all.sas
+++ b/all.sas
@@ -7601,6 +7601,98 @@ run;
   %return;
 %end;
 
+%mend;
+/**
+  @file
+  @brief Deletes a library by Name
+
+  @details  Used to delete a library.
+  Usage:
+
+      %* create a library in the home directory ;
+      %mm_createlibrary(
+        libname=My Temp Library,
+        libref=XXTEMPXX,
+        tree=/User Folders/&sysuserid,
+        directory=%sysfunc(pathname(work))
+      )
+
+      %* delete the library ;
+      %mm_deletelibrary(name=My Temp Library)
+
+  After running the above, the following will be shown in the log:
+
+  ![](https://i.imgur.com/Y4Tog24.png)
+
+  @param [in] name= the name (not libref) of the library to be deleted
+
+  <h4> SAS Macros </h4>
+  @li mf_getuniquefileref.sas
+  @li mp_abort.sas
+
+
+  @version 9.4
+  @author Allan Bowe
+
+**/
+
+%macro mm_deletelibrary(
+      name=
+)/*/STORE SOURCE*/;
+
+
+/**
+  * Check if library exists and get uri
+  */
+data _null_;
+  length type uri $256;
+  rc=metadata_resolve("omsobj:SASLibrary?@Name='&name'",type,uri);
+  call symputx('checktype',type,'l');
+  call symputx('liburi',uri,'l');
+  putlog (_all_)(=);
+run;
+%if &checktype ne SASLibrary %then %do;
+  %put &sysmacroname: Library (&name) was not found, and so will not be deleted;
+  %return;
+%end;
+
+%local fname1 fname2;
+%let fname1=%mf_getuniquefileref();
+%let fname2=%mf_getuniquefileref();
+
+filename &fname1 temp lrecl=10000;
+filename &fname2 temp lrecl=10000;
+data _null_ ;
+  file &fname1 ;
+  put "<DeleteMetadata><Metadata><SASLibrary Id='&liburi'/>";
+  put "</Metadata><NS>SAS</NS><Flags>268436480</Flags><Options/>";
+  put "</DeleteMetadata>";
+run ;
+proc metadata in=&fname1 out=&fname2 verbose;run;
+
+/* list the result */
+data _null_;infile &fname2; input; list; run;
+
+filename &fname1 clear;
+filename &fname2 clear;
+
+/**
+  * Check deletion
+  */
+%local isgone;
+data _null_;
+  length type uri $256;
+  rc=metadata_resolve("omsobj:SASLibrary?@Id='&liburi'",type,uri);
+  call symputx('isgone',type,'l');
+run;
+
+%mp_abort(iftrue=(&isgone = SASLibrary)
+  ,mac=&sysmacroname
+  ,msg=%str(Library (&name) NOT deleted)
+)
+
+%put &sysmacroname: Library &name (&liburi) was successfully deleted;
+
 %mend;
 /**
   @file mm_deletestp.sas
@@ -8453,6 +8545,39 @@ run;
   options metarepository=&oldrepo;
 %end;
 
+%mend;/**
+  @file
+  @brief Compares the metadata of a library with the physical tables
+
+  @param [out] prefix the dataset to create that contains the list of libraries
+  @param mDebug set to anything but 0 to show debug messages in the log
+
+  @test Create a temporary library as follows:
+
+    %
+
+  @details Creates a series of output tables that show the differences between
+  metadata and physical tables.
+  Each output can be created with an optional prefix.
+
+
+
+
+  @version 9.3
+  @author Allan Bowe
+
+**/
+
+%macro mm_getlibmetadiffs
+    prefix=metadiff
+    ,mdebug=0
+)/*/STORE SOURCE*/;
+
+%if &mdebug = 0 %then %let mdebug=*;
+
+&mdebug %put _local_;
+
+
 %mend;/**
   @file
   @brief Creates a dataset with all metadata libraries