diff --git a/src/+equations/calc_rssrbs.m b/src/+equations/calc_rssrbs.m
index 767600fc..690ac1cd 100644
--- a/src/+equations/calc_rssrbs.m
+++ b/src/+equations/calc_rssrbs.m
@@ -1,5 +1,5 @@
 function [rss,rbs] = calc_rssrbs(SMC,LAI,rbs)
 global SaturatedMC ResidualMC fieldMC
 aa=3.8;
-rss = exp((aa+4.1)-aa*(SMC-ResidualMC(1))/(fieldMC(1)-ResidualMC(1)));
-rbs            = rbs*LAI/4.3;
\ No newline at end of file
+rss = exp((aa+4.1)-aa*(SMC-ResidualMC(1))/(fieldMC(1)-ResidualMC(1))); % rss: soil surface resistance [s m−1]; aa and 4.1 is a pre-defined input
+rbs            = rbs*LAI/4.3; % rbs: resistances for leaf boundary layer
\ No newline at end of file
diff --git a/src/Latent.m b/src/Latent.m
index 8f700b22..896cff23 100644
--- a/src/Latent.m
+++ b/src/Latent.m
@@ -5,3 +5,6 @@
     for MN=1:NN
         L(MN)=(2.501*10^6-2369.2*TT(MN))/1000;   % J g-1
     end
+    
+    
+% Git lesson test