diff --git a/Labs/02. Arithmetic-logic unit/alu_opcodes_pkg.sv b/Labs/02. Arithmetic-logic unit/alu_opcodes_pkg.sv
index 9ec054c..7218e97 100644
--- a/Labs/02. Arithmetic-logic unit/alu_opcodes_pkg.sv	
+++ b/Labs/02. Arithmetic-logic unit/alu_opcodes_pkg.sv	
@@ -19,20 +19,20 @@ localparam ALU_OR   = 5'b00110;
 localparam ALU_AND  = 5'b00111;
 
 // shifts
-localparam ALU_SRA  = 5'b01101;
-localparam ALU_SRL  = 5'b00101;
-localparam ALU_SLL  = 5'b00001;
+localparam ALU_SRA  = 5'b01101;  // Shift_Right_Ariphmetic
+localparam ALU_SRL  = 5'b00101;  // Shift Right Logic
+localparam ALU_SLL  = 5'b00001;  // Shift Left Logic
 
 // comparisons
-localparam ALU_LTS  = 5'b11100;
-localparam ALU_LTU  = 5'b11110;
-localparam ALU_GES  = 5'b11101;
-localparam ALU_GEU  = 5'b11111;
-localparam ALU_EQ   = 5'b11000;
-localparam ALU_NE   = 5'b11001;
+localparam ALU_LTS  = 5'b11100;  // Less Than Signed
+localparam ALU_LTU  = 5'b11110;  // Less Than Unsigned
+localparam ALU_GES  = 5'b11101;  // Great [or] Equal signed
+localparam ALU_GEU  = 5'b11111;  // Great [or] Equal unsigned
+localparam ALU_EQ   = 5'b11000;  // Equal
+localparam ALU_NE   = 5'b11001;  // Not Equal
 
 // set lower than operations
-localparam ALU_SLTS = 5'b00010;
-localparam ALU_SLTU = 5'b00011;
+localparam ALU_SLTS = 5'b00010;  // Set Less Than Signed
+localparam ALU_SLTU = 5'b00011;  // Set Less Than Unsigned
 
-endpackage
\ No newline at end of file
+endpackage