### Name: init.ctl.index
### Title: Generates co-ordinates of spots.
### Aliases: init.ctl.index
### Keywords: manip

### ** Examples

   x <- init.ctl.index(1:4, 1:4, 1:2, 15:20)
## Generates the 4 co-ordinates index to spots in the first 2 rows,
## columns 15 to 20 of every print-tips groups.



