What is this control?

Hi, we are using application designer in our term project at university.
What is the name of the control circled red, in the attachment?
Sure it is not an independent one.
Is there a way to edit its color etc. ?

Thanks.

Hi barisyanar,
the component is “rowarea”
with property foldable=false
You can control the header style with the propery : areastyle = font-weight: bold for example
You can control the contents style with the property : contenttablestyle = background-color: #FF0000