By a ”line” I mean a ”reserved space”

Thank you RoSoft 

So what would be the way to create a line to separate visually 2 parts of the space of the form ?

Sorry I did not read well your answer…

Well I have an error…

Could you advice me ? 

Thank you but…

I aplogize… I forgot the ” ” 

It works well but there is a white area around the line.

Is it possible to erase it ?

I can't validate the three 238.

so it does not work.

Thanks to tell me how to do it.

What do you mean by ”put the label position on hidden”

I can't find it.

I got it for to validate : one must click on the little grey circle in the label.

but not the hidden position.

I tried that to get a blue line but it does not seem to work :

html("<hr color="blue">")

Is there an error or it is not possible ?

Thank you so much Steven.

I tried also : 

html("<hr size=4>") but it does not work

is there a possibility to mix a code like that :

red line with a 5 size ? 

Thank you Steven for this other way.

I tried some codes lines as your first one and I found that :.

html("<hr size=4 color=blue>")

That works.