The answer is YES. It is possible to point your primary domain to a sub-folder within public_html rather than public_html itself. Here is some information that should allow you to do so yourself.
Drupal 7 field module defines a field level template file, which defines the HTML structure of the field. We can use this file to override the display of field including changing how label will be display.
To show welcome message in Drupal we can identify whether user is logged in or not using simple code snippet below.