Over the real numbers, a real flag manifold is also called an R-space, and the R-spaces which are Riemannian symmetric spaces under "K" are known as symmetric R-spaces. The symmetric R-spaces which are not Hermitian symmetric are obtained by taking "G" to be a real form of the biholomorphism group "G"c of a Hermitian symmetric space "G"c/"P"c such that "P" := "P"c∩"G" is a parabolic subgroup of "G". Examples include projective spaces (with "G" the group of projective transformations) and spheres (with "G" the group of conformal transformations).