You can click on some images to see a 600-pixel version in a new window.
Use the GPS Exchange file format (extension .gpx). This is a Public Domain format and most, but not all, of the commercial digital mapping programs can read and write the files. [If your mapping program does not do so then be cautious in spending any more money with them: they will probably be going out of business soon!]
If the chosen track is printed so that it shows up clearly then some fine details will be hidden by the line. There is a very easy antidote to this. You should print a copy of your map on each side of the paper and leave out the track on one of them.
When you are printing a map you can, if you wish, click on the track before printing and it will become thicker and more visible.
Use CTRL-G. (I know about this because I once managed to locate it in the menu system)
If this is failing to work, it is usually because the two components are not linked. Try enlarging the area near the junction until the trackpoints are a few mm in size on the screen. Inspect the point at each of the alleged three-way junctions. If they do not display a blue circle around them and a blue cross through them, then they are not linked.
To make the linkage work, click on the last point in the minor track to select it (turns red). Pull it slightly away from the junction, then right-click on it and opt to extend track. Put a couple of extra points nearby to confirm you are under way then go to the trackpoint on the main track that you wish to which you wish to link and move the mouse over it. It must have a little red box around it if the junction is to be correctly made, so get your mouse pointer placement exactly right. Now double-click on it. The point should now be enclosed in a blue circle with a cross through the point. If so you have made a good link.
Tidy-up by selecting and deleting the redundant points you created and then check-out the other end of the minor track in the same way. By now you should have the blue cross and circle at both ends of the minor track. The re-routing procedure should now work correctly.
One normally would do this after having tried-out several variants of a walk and, having decided on the best version, one needs to delete the redundant branches. Originally I was doing this one point at a time. There is a better way.
Select the first point of the branch to be deleted and right-click to use the track / break track option. Do the same at the other end of the branch. Now save the track as a .gpx type and close the window. Re-load the track from the .gpx file and the whole of the detached branch should have vanished.
Set up to print your map and note the following on a scrap of paper while you are setting-up the printing. 1) The scale of your map. 2) The grid reference of the centre point.
Now open a new map and write the stored information into the appropriate boxes. You will probably prefer to tick the "View mapping in preview" box. Now print the map.
Comparison of some commercial mapping programs