combining different splines as one line

[superamerica]

i want to form a path on the surface of a cylinder, but i need to combine all of them as one line, cause i want the sketch to follow all of these paths and form a closed solid form. need help, thanks

 

[superamerica]

i want to combine all of these splines as one line, cause i want sketch to follow this path and form a closed solid

 

[MrCATIA]

use the JOIN command to attach several continguous curves into a single curve.