It depends. In some cases you may do something like this:
lccommand1 = string1_but_too_long
lccommand2 = string2_but_too_long
lccommandtoolong = lccommand1 + lccommand2

What is the command/instruction you are talking about?

>hi
>a simple one..
>i have al very long instruction line and i get an error cause line i too long, how can i have an instrucion in two lines