diff --git a/Documentation/ProjectFile/prj/processes/process/secondary_variables/i_secondary_variables.md b/Documentation/ProjectFile/prj/processes/process/secondary_variables/i_secondary_variables.md
index abab856d7304fc2cb3fadd2bc7abcc02387f4689..e260cb1ef2e7951869187568f9b4fd6c539f1645 100644
--- a/Documentation/ProjectFile/prj/processes/process/secondary_variables/i_secondary_variables.md
+++ b/Documentation/ProjectFile/prj/processes/process/secondary_variables/i_secondary_variables.md
@@ -1 +1,3 @@
 Configures which secondary variables the current process can compute.
+
+The secondary variables are process specific and are added through addSecondaryVariable() method in each process.