diff --git a/conception/th_computePosition.txt b/conception/th_computePosition.txt
new file mode 100644
index 0000000..7ee6010
--- /dev/null
+++ b/conception/th_computePosition.txt
@@ -0,0 +1,12 @@
+@startuml
+skinparam monochrome true
+start
+
+while ()
+  :startPosition?;
+  :shouldComputePosition = true;
+  :stopPosition?;
+  :shouldComputePosition = true;
+endwhile
+stop
+@enduml
\ No newline at end of file