diff --git a/msg/json/lb.json b/msg/json/lb.json
index 179447952..f645e1e25 100644
--- a/msg/json/lb.json
+++ b/msg/json/lb.json
@@ -2,18 +2,20 @@
 	"@metadata": {
 		"authors": [
 			"Robby",
-			"Soued031"
+			"Soued031",
+			"Les Meloures"
 		]
 	},
 	"VARIABLES_DEFAULT_NAME": "Element",
 	"TODAY": "Haut",
-	"DUPLICATE_BLOCK": "Duplizéieren",
+	"DUPLICATE_BLOCK": "Eng Kopie maachen",
 	"ADD_COMMENT": "Bemierkung derbäisetzen",
-	"REMOVE_COMMENT": "Bemierkunge ewechhuelen",
+	"REMOVE_COMMENT": "Bemierkung ewechhuelen",
 	"DELETE_BLOCK": "Block läschen",
 	"DELETE_X_BLOCKS": "%1 Bléck läschen",
 	"CLEAN_UP": "Bléck opraumen",
 	"COLLAPSE_BLOCK": "Block zesummeklappen",
+	"COLLAPSE_ALL": "Bléck zesummeklappen",
 	"EXPAND_BLOCK": "Block opklappen",
 	"EXPAND_ALL": "Bléck opklappen",
 	"DISABLE_BLOCK": "Block desaktivéieren",
@@ -28,7 +30,7 @@
 	"NEW_VARIABLE_TITLE": "Neie variabelen Numm:",
 	"RENAME_VARIABLE": "Variabel ëmbenennen...",
 	"RENAME_VARIABLE_TITLE": "All '%1' Variabelen ëmbenennen op:",
-	"COLOUR_PICKER_TOOLTIP": "Wielt eng Faarf vun der Palette.",
+	"COLOUR_PICKER_TOOLTIP": "Sicht eng Faarf an der Palette eraus.",
 	"COLOUR_RANDOM_TITLE": "zoufälleg Faarf",
 	"COLOUR_RANDOM_TOOLTIP": "Eng zoufälleg Faarf eraussichen.",
 	"COLOUR_RGB_TITLE": "fierwe mat",
@@ -39,9 +41,13 @@
 	"COLOUR_BLEND_COLOUR1": "Faarf 1",
 	"COLOUR_BLEND_COLOUR2": "Faarf 2",
 	"COLOUR_BLEND_RATIO": "ratio",
-	"CONTROLS_REPEAT_TITLE": "%1 mol widderhuelen",
-	"CONTROLS_REPEAT_INPUT_DO": "maachen",
+	"CONTROLS_REPEAT_TITLE": "%1-mol widderhuelen",
+	"CONTROLS_REPEAT_INPUT_DO": "maach",
+	"CONTROLS_WHILEUNTIL_OPERATOR_WHILE": "Widderhuel soulaang",
 	"CONTROLS_WHILEUNTIL_OPERATOR_UNTIL": "widderhuele bis",
+	"CONTROLS_WHILEUNTIL_TOOLTIP_WHILE": "Féiert d'Uweisungen aus, soulaang wéi de Wäert richteg ass",
+	"CONTROLS_WHILEUNTIL_TOOLTIP_UNTIL": "Féiert d'Uweisungen aus, soulaang wéi de Wäert falsch ass.",
+	"CONTROLS_FOR_TITLE": "zielt mat %1 vun %2 bis %3 mat %4",
 	"CONTROLS_FOREACH_TITLE": "fir all Element %1 an der Lëscht %2",
 	"CONTROLS_IF_MSG_IF": "wann",
 	"CONTROLS_IF_MSG_ELSE": "soss",
@@ -53,17 +59,17 @@
 	"LOGIC_BOOLEAN_TOOLTIP": "Schéckt entweder richteg oder falsch zréck.",
 	"LOGIC_NULL": "null",
 	"LOGIC_TERNARY_HELPURL": "https://en.wikipedia.org/wiki/%3F:",
-	"LOGIC_TERNARY_CONDITION": "test",
+	"LOGIC_TERNARY_CONDITION": "Test",
 	"LOGIC_TERNARY_IF_TRUE": "wa wouer",
 	"LOGIC_TERNARY_IF_FALSE": "wa falsch",
 	"MATH_NUMBER_TOOLTIP": "Eng Zuel.",
-	"MATH_ARITHMETIC_TOOLTIP_ADD": "Gëtt d'Zomme vun zwou Zuelen.",
+	"MATH_ARITHMETIC_TOOLTIP_ADD": "D'Produkt vun den zwou Zuelen zréckginn.",
 	"MATH_ARITHMETIC_TOOLTIP_MULTIPLY": "D'Produkt vun den zwou Zuelen zréckginn.",
-	"MATH_SINGLE_HELPURL": "https://en.wikipedia.org/wiki/Square_root",
+	"MATH_SINGLE_HELPURL": "https://lb.wikipedia.org/wiki/Racine carrée",
 	"MATH_SINGLE_OP_ROOT": "Quadratwuerzel",
 	"MATH_SINGLE_OP_ABSOLUTE": "absolut",
 	"MATH_IS_EVEN": "ass gerued",
-	"MATH_IS_ODD": "ass net gerued",
+	"MATH_IS_ODD": "ass ongerued",
 	"MATH_IS_PRIME": "ass eng Primzuel",
 	"MATH_IS_WHOLE": "ass eng ganz Zuel",
 	"MATH_IS_POSITIVE": "ass positiv",