What do those colours mean?

WHITE COURSE

Courses follow linear features drawn on the map. These are such things as tracks, roads, fences, and streams (these are called handrails). A control site is located at every decision point (for example, a turning point, or a change in the type of linear feature - e.g. from following a track to following a stream). All control markers will be visible from the approach side. Where a course has to deviate from the handrail feature (for example, to cross a forest block), the route will be marked all the way until a new handrail feature is reached. The start triangle will be on a linear feature. In forested areas, if no such feature is available, then there will be a taped route all the way from the start triangle to a linear feature (that is, the first control). Compass, if used, is limited to map orientation only. No route choice is offered. Doglegs are permitted.

YELLOW COURSE

Yellow courses are designed to give you limited route choice and limited compass use for rough direction only. Control sites will be on or near (less than 50m) drawn linear man-made or water features, and not at turning points. This gives you the opportunity to follow handrails or to cut across country. Control sites will be visible from the approach side by any reasonable route.

ORANGE COURSE

This course will have route choice with BIG attack points near the control sites and/or catching features less than 100m behind. Control sites can be fairly small point features and the control markers need not necessarily be visible from the attack point. Exit from the control should not be the same as the entry (no doglegs permitted). Simple navigation by contours and rough compass with limited pace counting required. Use of a chain of prominent features as "stepping stones" to complete a leg is permitted.

RED COURSE

Navigation will be as difficult as possible with small contour and point features as preferred control sites (no obvious attack points, no handrails etc). Control sites will be placed in areas rich in detail, and before, and not close to, a large catching feature. Route choice will be an important element in most legs. No doglegs permitted.