Symbols - order of precedence?

["Nick Channon" <nick.channon@xxxxxxxxxxxxx>]

Hi group, I wonder if anyone can help me by 
answering the following questions:
 
1) When using an Expert that includes multiple 
formulas, will the chart symbols (I mean the buy and sell signals that appear on 
a chart) for those formulas appear in any particular order of precedence? In 
other words, if 2 different symbols are valid for the bar in question, will one 
of them overwrite the other?
 
2) If so, what is the order of precedence and how 
can you control it? Does it depend, for example, on the top-to-bottom sequence 
of the formulas in the Expert? In other words, if you have a preference for 
which symbol should appear, can you arrange the sequence to make it happen that 
way?
 
Many thanks,
Nick