diff --git a/runtime/ftplugin/nroff.vim b/runtime/ftplugin/nroff.vim
new file mode 100644
index 0000000..069c02e
--- /dev/null
+++ b/runtime/ftplugin/nroff.vim
@@ -0,0 +1,11 @@
+" Vim filetype plugin
+" Language:	roff(7)
+" Maintainer:	Chris Spiegel <cspiegel@gmail.com>
+" Last Change:	2019 Apr 24
+
+if exists("b:did_ftplugin")
+  finish
+endif
+let b:did_ftplugin = 1
+
+setlocal commentstring=.\\\"%s
diff --git a/runtime/ftplugin/ocaml.vim b/runtime/ftplugin/ocaml.vim
index 3ee7849..ae41422 100644
--- a/runtime/ftplugin/ocaml.vim
+++ b/runtime/ftplugin/ocaml.vim
@@ -372,8 +372,8 @@
   endfun
 
   " This variable contain a dictionnary of list. Each element of the dictionnary
-  " represent an annotation system. An annotation system is a list with :
-  " - annotation file name as it's key
+  " represent an annotation system. An annotation system is a list with:
+  " - annotation file name as its key
   " - annotation file path as first element of the contained list
   " - build path as second element of the contained list
   " - annot_file_last_mod (contain the date of .annot file) as third element
diff --git a/runtime/ftplugin/sql.vim b/runtime/ftplugin/sql.vim
index 4d6fcd9..1c02a98 100644
--- a/runtime/ftplugin/sql.vim
+++ b/runtime/ftplugin/sql.vim
@@ -400,7 +400,7 @@
 
 " Predefined SQL objects what are used by the below mappings using
 " the ]} style maps.
-" This global variable allows the users to override it's value
+" This global variable allows the users to override its value
 " from within their vimrc.
 " Note, you cannot use \?, since these patterns can be used to search
 " backwards, you must use \{,1}
@@ -486,10 +486,10 @@
     " OMNI function prior to setting up the SQL OMNI function
     let b:sql_compl_savefunc = &omnifunc
 
-    " Source it to determine it's version
+    " Source it to determine its version
     runtime autoload/sqlcomplete.vim
     " This is used by the sqlcomplete.vim plugin
-    " Source it for it's global functions
+    " Source it for its global functions
     runtime autoload/syntaxcomplete.vim
 
     setlocal omnifunc=sqlcomplete#Complete