diff --git a/Slang/slang.js b/Slang/slang.js
index 6a7e72d..bad2754 100755
--- a/Slang/slang.js
+++ b/Slang/slang.js
@@ -551,7 +551,7 @@ var BOOTSTRAP = [
 'Get block length',
 '		[ 1 2 3 ] len',
 '	Result:',
-'		3',
+'		[ 1 2 3 ] 3',
 '',
 'Pop element form block tail',
 '		[ 1 2 3 ] pop',
@@ -680,15 +680,15 @@ var BOOTSTRAP = [
 '-- the condition block must have the folowing stack effect: elem -- bool',
 ':: filter ( b c -- b ) [',
 '	-- prepare the condition...',
-'	\\ dup 0 before',
-'	-- define the template...',
+'	[ dup \\ TEST exec ] clone',
+'		swap 2 to',
+'	-- prepare the template...',
 '	[ TEST ? [  ] else [ . ] ] clone',
-'		-- prepare the template...',
 '		swap 0 to',
 '			-- do the filtering',
 '			map ]',
 '',
-'-- Create a block containing a range numbers form 0 to n-1...',
+'-- Create a block containing a range of numbers form 0 to n-1...',
 ':: range ( n -- b ) [',
 '	-- initial state...',
 '	[ dup isNumber ] ? ',
@@ -703,6 +703,20 @@ var BOOTSTRAP = [
 '	else',
 '		[ 1 sub 0 before range ] ]',
 '',
+'-- Sum up the elements of a block...',
+':: sum ( L -- s ) [',
+'	clone',
+'	-- empty list, sum is 0...',
+'	[ len 0 eq ] ?',
+'		[ . 0 ]',
+'	else',
+'		-- sum of list of len 1 is it\'s content, so just pop it...',
+'		[ [ len 1 eq ] ?',
+'			[ pop swap . ]',
+'		-- and now recursively sum up elements till the list is 1 in length...',
+'		else',
+'			[ pop rot pop tor add push sum ] ] ]',
+'',
 '',
 '',
 '-- Meta-word examples (experimental)...',
@@ -753,19 +767,6 @@ var BOOTSTRAP = [
 ':: range2 ( n s -- b )',
 '		[ swap range swap [] swap push \\ * 0 before map ]',
 '',
-'-- Sum up the elements of a block...',
-':: sum ( L -- s ) [',
-'	-- empty list, sum is 0...',
-'	[ len 0 eq ] ?',
-'		[ . 0 ]',
-'	else',
-'		-- sum of list of len 1 is it\'s content, so just pop it...',
-'		[ [ len 1 eq ] ?',
-'			[ pop swap . ]',
-'		-- and now recursively sum up elements till the list is 1 in length...',
-'		else',
-'			[ pop rot pop tor add push sum ] ] ]',
-'',
 ''].join('\n')