From BlenderWiki
Selection
Something that has bothered me about curves is the lack of an ability to tell which end is the start and which end is the end. This is particularly irritating when using follow-paths or curve-guides, as it is hard to predict whether the curve is actually set up as you want it.
Therefore, I coded the first two new select functions for this purpose. The others were also added in the process.
Select/Deselect First
This option selects/deselects the first control point of a curve in editmode
Select/Deselect Last
This option selects/deselects the last control point of a curve in editmode
Select More
Like for mesh. Ctrl+ NumPad selects control points on either side of selected one
Select Less
Like for mesh. Ctrl- NumPad deselects control points on either side of selected one
Select Next
Only for curves. Selects the next curve point to the selected one(s). Only menu access.
Select Previous
Only for curves. Selects the previous curve point to the selected one(s). Only menu access.
