[hddl] doc

TP02/readme.md

@@ -100,6 +100,14 @@ plan cooking_domain.hddl cooking_problem.hddl debug > plan.txt
     - check execution line per line... HDDL is not the more ergonomic way to debug... use recursivity with care.
 
 
+## recommendation
+
+ - Start to implement move_to / goto tasks
+ - use (yes) method to validate your current behavior
+ - (if necessary, remove tasks and preconditions...)
+ - proceed step by step, line per line, varaible per variable...
+
+
 
 ## Open question: