first_steps.markdown

@@ -91,7 +91,7 @@ which ensure time consistency. The different output files are:
 
  * tacts: contactors of rigid objects
  * rigids: center of mass of rigid objects
- * inter: interactions
+ * ptc: contact points (interactions)
  * mecafe: mechanical mesh
  * therfe: thermal mesh
  * porofe: porous mechanical mesh