Typical labels of real forms

Let X(C)⊂Pr(C) be an integral projective variety defined over R . Let σ denote the complex conjugation. A point q∈Pr(R) is said to have (a,b)∈N2 as a label if there is S⊂X(C) such that σ(S)=S, S spans q, #S=2a+b and #(S∩X(R))=b . We say that (a,b) has weight 2a+b. A label-weight t is typical for the k-secant variety σk(X(C)) of X(C) if there is a non-empty euclidean open subset V of σk(X(C))(R) such that all q∈V have a label of weight t and no label of weight