pub fn display_sub_secs(&self) {
        for i in 0..self.sub_secs.len() {
            println!("\t\tSubSec #{}: ", i);
            self.sub_secs[i].display();
        }
    }
/// formatted display of Section's subsections
formatted display of Section's subsections
formatted display of Section ' s subsections
pub fn display_sub_secs(&self) {
        for i in 0..self.sub_secs.len() {
            println!("\t\tSubSec #{}: ", i);
            self.sub_secs[i].display();
        }
    }
pub fn display_sub_secs ( & self ) { for i in 0 .. self . sub_secs . len ( ) { println ! ( " \t \t " i ) ; self . sub_secs [ i ] . display ( ) ; } }
formatted display of Section's subsections
formatted display of Section ' s subsections
&self
&self