The profile will initially have force applied to its X- material axis. The profile may be rotated so that the force is applied to the (usually weaker) Y- material axis. This means, that the profile is turned 90 degrees along its lengths axis.
With the command Edit / Profile a screen appears allowing you to change a profiles information.
Now you may select the number of the profile to be rotated and alter the rotated status. Instead of Ix and Wx now Ly and Wy are displayed.
On the screen on bar information an R appears in parenthesis to let you know, that the profile is rotated.