Run script on screen open

[p_xatzi]

Basically, I want to execute a read request on screen open.

Some examples may be:
  - Pop up an information window every time a specific screen is accessed. The pop-up could be disabled later with a button.
  - Set a timer to return to home screen after some time of inactivity
  - Inform that a page is accessed and the name of user (if possible)

This is standard feature for HMIs and I was wondering if this is possible for LM too...