diff --git a/ChangeLog b/ChangeLog
index 573eb972c..3411ac5af 100755
--- a/ChangeLog
+++ b/ChangeLog
@@ -10,7 +10,7 @@ $Source$
       Documentation.html: new feature: pdf schema output, 
       thanks to Maxime Delorme (delorme.maxime at free.fr) 
       and to Olivier Plathey (www.fpdf.org)
-      (todo: checkboxes for grid, color and show coordinates) 
+      (todo: checkboxes for color and show coordinates) 
 
 2002-05-13 Loïc Chapeaux  <lolo@phpheaven.net>
     * left.php3, libraries/common.lib.php3: fixed xhtml bugs and optimized the
diff --git a/db_details_structure.php3 b/db_details_structure.php3
index 0d3b3ac2c..0cc5dc908 100644
--- a/db_details_structure.php3
+++ b/db_details_structure.php3
@@ -452,6 +452,8 @@ if ( PMA_PHP_INT_VERSION >= 40000
 echo '        ' . $strDisplayPDF . '&nbsp;:<br />' . "\n";
 echo '        ' . $strPageNumber . '&nbsp;' . "\n";
 echo '        ' . '<input type="text" name="pdf_page_number" size="3" class="textfield" />' . "\n";
+echo '        ' . $strShowGrid . '&nbsp;' . "\n";
+echo '        ' . '<input type="checkbox" name="show_grid" />' . "\n";
 echo '        ' . '&nbsp;<input type="submit" value="' . $strGo . '" />' . "\n";
 ?>
         </form>
diff --git a/lang/arabic.inc.php3 b/lang/arabic.inc.php3
index 0dcb7fdc5..364d57f5c 100644
--- a/lang/arabic.inc.php3
+++ b/lang/arabic.inc.php3
@@ -366,4 +366,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/brazilian_portuguese.inc.php3 b/lang/brazilian_portuguese.inc.php3
index 4dfdfb672..5da852c46 100644
--- a/lang/brazilian_portuguese.inc.php3
+++ b/lang/brazilian_portuguese.inc.php3
@@ -364,4 +364,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/bulgarian-koi8.inc.php3 b/lang/bulgarian-koi8.inc.php3
index f5ef37847..28141d486 100644
--- a/lang/bulgarian-koi8.inc.php3
+++ b/lang/bulgarian-koi8.inc.php3
@@ -365,4 +365,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/bulgarian-win1251.inc.php3 b/lang/bulgarian-win1251.inc.php3
index 94151a6b9..f75187184 100644
--- a/lang/bulgarian-win1251.inc.php3
+++ b/lang/bulgarian-win1251.inc.php3
@@ -365,4 +365,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/catala.inc.php3 b/lang/catala.inc.php3
index a107cc670..732302131 100644
--- a/lang/catala.inc.php3
+++ b/lang/catala.inc.php3
@@ -360,4 +360,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/chinese_big5.inc.php3 b/lang/chinese_big5.inc.php3
index 197a31bd5..fb364b195 100644
--- a/lang/chinese_big5.inc.php3
+++ b/lang/chinese_big5.inc.php3
@@ -363,4 +363,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/chinese_gb.inc.php3 b/lang/chinese_gb.inc.php3
index 9f8d6e350..13164d141 100644
--- a/lang/chinese_gb.inc.php3
+++ b/lang/chinese_gb.inc.php3
@@ -363,4 +363,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/croatian-iso8859-2.inc.php3 b/lang/croatian-iso8859-2.inc.php3
index 269a651de..71d1675c9 100644
--- a/lang/croatian-iso8859-2.inc.php3
+++ b/lang/croatian-iso8859-2.inc.php3
@@ -365,4 +365,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/croatian-win1250.inc.php3 b/lang/croatian-win1250.inc.php3
index 4687d6e51..932965d19 100644
--- a/lang/croatian-win1250.inc.php3
+++ b/lang/croatian-win1250.inc.php3
@@ -365,4 +365,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/czech-iso.inc.php3 b/lang/czech-iso.inc.php3
index 8709255be..8e350b245 100644
--- a/lang/czech-iso.inc.php3
+++ b/lang/czech-iso.inc.php3
@@ -361,4 +361,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/czech-win1250.inc.php3 b/lang/czech-win1250.inc.php3
index a1dfaad61..a5ebbc265 100644
--- a/lang/czech-win1250.inc.php3
+++ b/lang/czech-win1250.inc.php3
@@ -360,4 +360,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/danish.inc.php3 b/lang/danish.inc.php3
index 8da1eca73..df7d20c6a 100644
--- a/lang/danish.inc.php3
+++ b/lang/danish.inc.php3
@@ -359,4 +359,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/dutch.inc.php3 b/lang/dutch.inc.php3
index a0f422393..b40a52c63 100644
--- a/lang/dutch.inc.php3
+++ b/lang/dutch.inc.php3
@@ -359,4 +359,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/english.inc.php3 b/lang/english.inc.php3
index 08273d565..e1300b0d4 100644
--- a/lang/english.inc.php3
+++ b/lang/english.inc.php3
@@ -358,4 +358,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/estonian.inc.php3 b/lang/estonian.inc.php3
index 2ec9128ac..7b30c964c 100644
--- a/lang/estonian.inc.php3
+++ b/lang/estonian.inc.php3
@@ -360,4 +360,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/finnish.inc.php3 b/lang/finnish.inc.php3
index 0b1b05bdb..9a53b6069 100644
--- a/lang/finnish.inc.php3
+++ b/lang/finnish.inc.php3
@@ -364,4 +364,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/french.inc.php3 b/lang/french.inc.php3
index 3ca1d00ff..ce70566d4 100644
--- a/lang/french.inc.php3
+++ b/lang/french.inc.php3
@@ -360,4 +360,5 @@ $strConfigureTableCoord = 'Les coordonn
 $strScaleFactorSmall = 'Veuillez augmenter l\'échelle car le schéma déborde la page ';
 $strDisplayPDF = 'Afficher le schéma en PDF'; 
 $strPageNumber = 'Page n°:';
+$strShowGrid = 'Afficher la grille';
 ?>
diff --git a/lang/galician.inc.php3 b/lang/galician.inc.php3
index 83be0890e..c91ae0b02 100644
--- a/lang/galician.inc.php3
+++ b/lang/galician.inc.php3
@@ -364,4 +364,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/georgian.inc.php3 b/lang/georgian.inc.php3
index 0e11d649f..69c09f8f3 100644
--- a/lang/georgian.inc.php3
+++ b/lang/georgian.inc.php3
@@ -369,4 +369,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/german.inc.php3 b/lang/german.inc.php3
index 349460f9e..1d837c10a 100644
--- a/lang/german.inc.php3
+++ b/lang/german.inc.php3
@@ -360,4 +360,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/greek.inc.php3 b/lang/greek.inc.php3
index 6b93cfd18..b4e4d0ae6 100644
--- a/lang/greek.inc.php3
+++ b/lang/greek.inc.php3
@@ -361,4 +361,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/hebrew.inc.php3 b/lang/hebrew.inc.php3
index 9e94603ed..79c9d16c3 100644
--- a/lang/hebrew.inc.php3
+++ b/lang/hebrew.inc.php3
@@ -360,4 +360,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/hungarian.inc.php3 b/lang/hungarian.inc.php3
index bc11852ee..d499f1439 100644
--- a/lang/hungarian.inc.php3
+++ b/lang/hungarian.inc.php3
@@ -360,4 +360,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/indonesian.inc.php3 b/lang/indonesian.inc.php3
index 74c418848..d405608f1 100644
--- a/lang/indonesian.inc.php3
+++ b/lang/indonesian.inc.php3
@@ -359,4 +359,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/italian.inc.php3 b/lang/italian.inc.php3
index 37a30d4cc..12a8720b0 100644
--- a/lang/italian.inc.php3
+++ b/lang/italian.inc.php3
@@ -366,4 +366,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/japanese-euc.inc.php3 b/lang/japanese-euc.inc.php3
index bb61a673e..affb974af 100644
--- a/lang/japanese-euc.inc.php3
+++ b/lang/japanese-euc.inc.php3
@@ -369,4 +369,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/japanese-sjis.inc.php3 b/lang/japanese-sjis.inc.php3
index 29b8d9c0b..0a74902e9 100644
--- a/lang/japanese-sjis.inc.php3
+++ b/lang/japanese-sjis.inc.php3
@@ -369,4 +369,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/korean.inc.php3 b/lang/korean.inc.php3
index 9bf23b3bd..a5a6958a4 100644
--- a/lang/korean.inc.php3
+++ b/lang/korean.inc.php3
@@ -361,4 +361,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/latvian.inc.php3 b/lang/latvian.inc.php3
index b4855dc66..ce89f551e 100644
--- a/lang/latvian.inc.php3
+++ b/lang/latvian.inc.php3
@@ -364,4 +364,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/lithuanian.inc.php3 b/lang/lithuanian.inc.php3
index 622803c89..77cc002be 100644
--- a/lang/lithuanian.inc.php3
+++ b/lang/lithuanian.inc.php3
@@ -360,4 +360,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/norwegian.inc.php3 b/lang/norwegian.inc.php3
index 5bf54314a..86d98952c 100644
--- a/lang/norwegian.inc.php3
+++ b/lang/norwegian.inc.php3
@@ -364,4 +364,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/polish.inc.php3 b/lang/polish.inc.php3
index 867b24a73..12f964fae 100644
--- a/lang/polish.inc.php3
+++ b/lang/polish.inc.php3
@@ -360,4 +360,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/portuguese.inc.php3 b/lang/portuguese.inc.php3
index 004912c5d..82d37453b 100644
--- a/lang/portuguese.inc.php3
+++ b/lang/portuguese.inc.php3
@@ -367,4 +367,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/romanian.inc.php3 b/lang/romanian.inc.php3
index f3061125a..a08279db9 100644
--- a/lang/romanian.inc.php3
+++ b/lang/romanian.inc.php3
@@ -361,4 +361,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/russian-koi8.inc.php3 b/lang/russian-koi8.inc.php3
index b8ddc3826..806fc8da9 100644
--- a/lang/russian-koi8.inc.php3
+++ b/lang/russian-koi8.inc.php3
@@ -365,4 +365,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/russian-win1251.inc.php3 b/lang/russian-win1251.inc.php3
index c2431e185..0f5f4f7b2 100644
--- a/lang/russian-win1251.inc.php3
+++ b/lang/russian-win1251.inc.php3
@@ -365,4 +365,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/serbian-win1250.inc.php3 b/lang/serbian-win1250.inc.php3
index f5f8e3094..06a79d236 100644
--- a/lang/serbian-win1250.inc.php3
+++ b/lang/serbian-win1250.inc.php3
@@ -366,4 +366,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/slovak-iso.inc.php3 b/lang/slovak-iso.inc.php3
index ea699eef6..c303de665 100644
--- a/lang/slovak-iso.inc.php3
+++ b/lang/slovak-iso.inc.php3
@@ -363,4 +363,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/slovak-win1250.inc.php3 b/lang/slovak-win1250.inc.php3
index c0c294ab8..46b88ee39 100644
--- a/lang/slovak-win1250.inc.php3
+++ b/lang/slovak-win1250.inc.php3
@@ -363,4 +363,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/spanish.inc.php3 b/lang/spanish.inc.php3
index 921107d7e..5b7433cbd 100644
--- a/lang/spanish.inc.php3
+++ b/lang/spanish.inc.php3
@@ -358,4 +358,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/swedish.inc.php3 b/lang/swedish.inc.php3
index 3b6d692f1..57c537e2d 100644
--- a/lang/swedish.inc.php3
+++ b/lang/swedish.inc.php3
@@ -360,4 +360,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/thai.inc.php3 b/lang/thai.inc.php3
index b634e4e6f..f96f10040 100644
--- a/lang/thai.inc.php3
+++ b/lang/thai.inc.php3
@@ -367,4 +367,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/turkish.inc.php3 b/lang/turkish.inc.php3
index b44e75582..82dea3000 100644
--- a/lang/turkish.inc.php3
+++ b/lang/turkish.inc.php3
@@ -360,4 +360,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/lang/ukrainian-win1251.inc.php3 b/lang/ukrainian-win1251.inc.php3
index 1f1559272..e6226552d 100644
--- a/lang/ukrainian-win1251.inc.php3
+++ b/lang/ukrainian-win1251.inc.php3
@@ -360,4 +360,5 @@ $strConfigureTableCoord = 'Please configure the coordinates for table %s';  //to
 $strScaleFactorSmall = 'The scale factor is too small to fit the schema on one page';  //to translate
 $strDisplayPDF = 'Display PDF schema';  //to translate
 $strPageNumber = 'Page number:';  //to translate
+$strShowGrid = 'Show grid';  //to translate
 ?>
diff --git a/pdf_schema.php3 b/pdf_schema.php3
index afa866f17..be7aded3b 100644
--- a/pdf_schema.php3
+++ b/pdf_schema.php3
@@ -347,9 +347,9 @@ class rt_table {
 if (!isset($pdf_page_number)){
     $pdf_page_number = 1;
 }
-if (!isset($show_grid)){
-    $show_grid = 0;
-}
+
+$show_grid = (isset($show_grid) && $show_grid=='on')? 1:0;
+
 $rt  = new RT("auto",$pdf_page_number,0,1,$show_grid);
 
 ?>