inserting elements into a block

[Aurora_86]

Good evening to all,
I have a design consisting of a succession of arches and lines (arch-linear-linear, etc.). I would have the need to place a block (a ball) at the extreme points (ear/end) of each element. I could turn on the "end point" snap and place the various balls, however, as the arches and lines in question are numerous I ask you if there is a faster way to do what I described.
Thank you.

 

[thelittlesniper]

if the arches and lines are sized and are at constant intervals you could make a dynamic block with the dot that is constantly copied "x".

 

[Aurora_86]

are not constant

 

[Cristallo]

If you use a full version, I think you can find a lisp that inserts a block in every knot of a polyline, but do not resort as it is called.