I have two question.

The first one. Sometimes it is necessary to test some trading srateg manually before creating the EA. It is ok for M1, M5 and M15. But for H1 and higher timeframe it is difficult. Which piece of the code should be included in one indicator (anyone) for alarm (sounds or whatever) to indicate about two lines of the one indicator crossing? For example the indicator is having two lines only which suppose to be crossed (with alarm).

Second. We have two indicators. Which pieces of the code should be included into one or two indicators to indicate about two line crossing: one line is from the first indicator and an other line is from an other one (all those two lines are in the same window of course)?
If it is EA or script should be created so keep this question untill we will study EA and script's creation.