What does the little pen in the indicators column mean?

[Elle]

Question as above...stupid one i know

 

[Gérard Ducouret]

Hello Elle,

I guess you are in a Usage view : Task Usgae or Resource Usage.
The little pen means that the work plan of the resource on the task is not
the regular profile calculated by Project, but has been manually edited by
the user.

Hope this helps,

Gérard Ducouret