correcting comment

1 files changed, 6 insertions, 3 deletions

diff --git a/Source/Initialization/WarpXInitData.cpp b/Source/Initialization/WarpXInitData.cpp
index 2390ee4ec..ea7437183 100644
--- a/Source/Initialization/WarpXInitData.cpp
+++ b/Source/Initialization/WarpXInitData.cpp
@@ -286,9 +286,9 @@ WarpX::InitLevelData (int lev, Real time)
         }
     }
 
-    // if the input string is "constant", the values for the
-    // external field on the grid must be provided in the input file.
-
+    // if the input string for the B-field is "parse_b_ext_grid_function", 
+    // then the analytical expression or function must be 
+    // provided in the input file. 
     if (B_ext_grid_s == "parse_b_ext_grid_function") {
 
        Store_parserString("Bx_external_grid_function(x,y,z)",
@@ -327,6 +327,9 @@ WarpX::InitLevelData (int lev, Real time)
        }
     }
 
+    // if the input string for the E-field is "parse_e_ext_grid_function", 
+    // then the analytical expression or function must be 
+    // provided in the input file. 
     if (E_ext_grid_s == "parse_e_ext_grid_function") {
 
        Store_parserString("Ex_external_grid_function(x,y,z)",