diff --git a/README.md b/README.md
index f3fb4b6..4d29419 100755
--- a/README.md
+++ b/README.md
@@ -2,6 +2,19 @@
 
 Blender addon for rendering setup and checks
 
+## Environment variable available:
+
+File Output path templates :
+- `RENDERTOOLBOX_EXR_PATH_TEMPLATE` : single base path file output
+- `RENDERTOOLBOX_MULTILAYER_PATH_TEMPLATE` : multilayer base path file output
+
+Default Technical passes names:
+
+`RENDERTOOLBOX_TECH_PASSES` : comma separated list of socket names to separate as technical.  
+ex: `ao, vector, ...`
+
+
+
 ## Development
 ### Cloning
 1. Create a development directory, such as:
diff --git a/constant.py b/constant.py
deleted file mode 100644
index dd2c882..0000000
--- a/constant.py
+++ /dev/null
@@ -1,2 +0,0 @@
-# Technical pass names (names that should be in 32bit)
-TECH_PASS_KEYWORDS = ['uv', 'normal', 'depth', 'position', 'vector', 'ao']
\ No newline at end of file
diff --git a/fn.py b/fn.py
index 542dc5d..1b61f5f 100755
--- a/fn.py
+++ b/fn.py
@@ -3,7 +3,6 @@ import os
 import re
 import json
 
-from .constant import TECH_PASS_KEYWORDS
 from pathlib import Path
 
 
@@ -287,7 +286,7 @@ def connect_to_file_output(node_list, file_out=None, base_path='', excludes=None
         
         if tech_pass_names:
             # Filter tech passes
-            tech_outputs = [o for o in all_outputs if o.name.lower() in tech_pass_names] # TECH_PASS_KEYWORDS
+            tech_outputs = [o for o in all_outputs if o.name.lower() in tech_pass_names]
             # Regular outputs (excluding crypto and tech passes)
             regular_outputs = [o for o in all_outputs if o not in crypto_outputs and o not in tech_outputs]
         else:
diff --git a/operators/conform_collection_hierarchy.py b/operators/conform_collection_hierarchy.py
old mode 100644
new mode 100755
diff --git a/operators/output_management.py b/operators/output_management.py
old mode 100644
new mode 100755
diff --git a/operators/output_search_and_replace.py b/operators/output_search_and_replace.py
old mode 100644
new mode 100755
diff --git a/operators/output_setup.py b/operators/output_setup.py
index 52817be..2db8fd3 100755
--- a/operators/output_setup.py
+++ b/operators/output_setup.py
@@ -10,8 +10,6 @@ from bpy.props import (StringProperty,
                       EnumProperty,
                       CollectionProperty)
 
-from ..constant import TECH_PASS_KEYWORDS
-
 
 # region Search and replace
 ## -- Search and replace to batch rename item in collection property
diff --git a/operators/scene_checker.py b/operators/scene_checker.py
old mode 100644
new mode 100755
diff --git a/operators/simplify_conflicts.py b/operators/simplify_conflicts.py
old mode 100644
new mode 100755
diff --git a/operators/store_visibility_states.py b/operators/store_visibility_states.py
old mode 100644
new mode 100755
diff --git a/operators/utility.py b/operators/utility.py
old mode 100644
new mode 100755
diff --git a/operators/viewlayer_management.py b/operators/viewlayer_management.py
old mode 100644
new mode 100755
diff --git a/operators/visibility_conflicts.py b/operators/visibility_conflicts.py
old mode 100644
new mode 100755
diff --git a/preferences.py b/preferences.py
old mode 100644
new mode 100755
diff --git a/properties.py b/properties.py
old mode 100644
new mode 100755