diff --git a/infotro/Eln/labs/06-filters/README.md b/infotro/Eln/labs/06-filters/README.md
index 49513f4..62c6491 100644
--- a/infotro/Eln/labs/06-filters/README.md
+++ b/infotro/Eln/labs/06-filters/README.md
@@ -30,35 +30,6 @@ For a low pass filter without zeros, the "digital" gain is :
 $$k_{d} = k_{a}\cdot \prod_{i} \frac{1-e^{P_{ai}\cdot T}}{P_{ai}}$$
 
 ----------
-MatLab:
-% tfchk         % Check for proper transfer function
-% zp2tf         % Convert zero-pole-gain filter parameters to transfer function form
-% filter        % 1-D digital filter
-Signal Processing Toolbox :
-% eqtflength    % Equalize lengths of transfer function numerator and denominator
-% residuez      % Z-transform partial-fraction expansion
-% sos2tf        % Convert digital filter second-order section data to transfer function form
-% sos2zp        % Convert digital filter second-order section parameters to zero-pole-gain form
-% tf2sos        % Convert digital filter transfer function data to second-order sections form
-% tf2zpk        % Convert transfer function filter parameters to zero-pole-gain form
-% zp2sos        % Convert zero-pole-gain filter parameters to second-order sections form
-% freqz         % Frequency response of digital filter
-% freqs         % Frequency response of analog filters
-% impz          % Impulse response of digital filter
-% stepz         % Step response of digital filter
-% zplane        % Zero-pole plot for discrete-time systems
-% bilinear      % Bilinear transformation method for analog-to-digital filter conversion
-% ellipord      % Minimum order for elliptic filters
-% ellip         % Elliptic filter design
-% chirp         % Swept-frequency cosine
-Control Toolbox :
-% bode          % Bode plot of frequency response, or magnitude and phase data
-% zpk           % Zero-pole-gain model
-% zpkdata       % Access zero-pole-gain data
-% tf            % Transfer function model
-% tfdata        % Access transfer function data
-% lsim          % Plot simulated time response of dynamic system to arbitrary inputs; simulated response data
-
 
 fc = 1000;
 wc = 2*pi*fc;
@@ -81,12 +52,6 @@ sysd = zpk(zd, pd, kd, ts)
 sysdb = zpk(zdb, pdb, kdb, ts)
 
 bode(sysa, sysd, sysdb);
-title('Bode Diagram', 'Color', '#808080');
-xlabel('Frequency (rad/s)', 'Color', '#808080');
-ylabel('Magnitude (dB)', 'Color', '#808080');
-ylabel('Phase (deg)', 'Color', '#808080');
-legend('analog','digital','bilinear', 'Color', 'white')
-
 
 ![bode_design_filter.svg](bode_design_filter.svg)