Option 1 is to restric yourself to run 100m or any competition movement in time and distance in order to be specific.
Option 2 is to gradually prepare and get ready to the competition time and distance. This includes non-specitfic items which develop ancillary abilities as well as compensation tools, and specific work in a modified way (lower intensity with shorter or longer distances) in order to increase work capacity.
All the exercices/items can be maintained but emphasis vary throughout the season.
3/1 means 3 weeks intensification and 1 unload, and you will have visual example with the graphs (vancouver’03?)
I don’t understand your question, can you rephrase it?
With S-L, the longer distances are done at <75% pace (tempo work), while the short distance are sprints, which eventually get longer and are called speed endurance; tempo work is maintained all through and pace remains <75%.