diff --git a/mapytex/calculus/API/renders.py b/mapytex/calculus/API/renders.py
index 6332259..7c87144 100644
--- a/mapytex/calculus/API/renders.py
+++ b/mapytex/calculus/API/renders.py
@@ -16,6 +16,11 @@ def _txt(mo_tree):
     """ txt render for MOs or Trees"""
     try:
         return tree2txt(mo_tree)
+    except AttributeError:
+        pass
+
+    try:
+        return mo_tree.__txt__
     except AttributeError:
         return str(mo_tree)
 
@@ -23,6 +28,11 @@ def _tex(mo_tree):
     """ Tex render for MOs or Trees"""
     try:
         return tree2tex(mo_tree)
+    except AttributeError:
+        pass
+
+    try:
+        return mo_tree.__tex__
     except AttributeError:
         return str(mo_tree)