[NTG-context] Blank lines inside verbatim environment

Hello ConTEXist. I know that this probably is no reason, but can be in an environment \starttyping ... \stoptyping turn on, which will each blank line in the statement reflect? I want put in the presentation in this environment, a direct numbers of blank lines. The larger number of empty lines is replaced by a single blank line (for obvious reasons). I tried to experiment with the settings \setuptyping, but without success. Thanx Jaroslav Hajtmar Here is my minimal example : \definetyping[mytyping][color=blue, style=type, option=, blank=line, space=fixed]% \starttext \startmytyping 1. line 2. line 5. line 7. line 12. line \stopmytyping \stoptext