diff --git a/ptychoScopy.md b/ptychoScopy.md
index 874be67..e06267c 100644
--- a/ptychoScopy.md
+++ b/ptychoScopy.md
@@ -15,7 +15,7 @@ To open interactive panel, run the line:
 - Download code from GitLab
 - Find or measure calibration values - instructions in the "calibration.xlsl" file
 - Fill the parameters in
-- Set up the python environment
+- Set up the python environment ([About](About))
 
 (b) Main ptychoScopy panel 
 - In blue: main microscope control panel described in detail in [Microscope control panel](Controls).