In particular, we have a marked point of the projective system.

Pigeons can only go back to one "mentally marked" point that they have identified as their home.

Its soundtrack and voice acting marked other strong points.

Follow a course through the woods to find a series of 'control points' marked on a pre-printed map.

These marked points should be a set amount of space apart.

An operator will push a button at the marked point when following the music.

The rules may be varied by requiring lines of 4 marked points in a row rather than 5, with a reduced starting configuration.

Rotating the sheet by ten degrees around some marked point (which remains motionless).

Finally the forces of wind, water, impetus and friction all met at the point marked 'fall over slowly'.

This is how two Lower waves develop, which expand as unattainably marked points with new route information.