Function ncplane_perimeter 

pub fn ncplane_perimeter(
    plane: &mut NcPlane,
    ul: &NcCell,
    ur: &NcCell,
    ll: &NcCell,
    lr: &NcCell,
    hline: &NcCell,
    vline: &NcCell,
    boxmask: impl Into<NcBoxMask_u32>,
) -> NcResult_i32

Draws the perimeter around plane.

Method: NcPlane.perimeter().