-**VectorSerie**
- This indicates a variable that has to be filled by a list of
- vectors, usually given either as a string or as a script file.
+When a command or keyword can be entered using a script file identified by the
+pseudo-type "*Script*", this script must contain a variable or method that has
+the same name than the variable to be completed. In other words, when importing
+such a script into a Python command or Python node, it must create a variable
+of the correct name in the current namespace of the node. For example, a Python
+script making available the draft variable, named "*Background*", must have the
+following form::