Update conditional_true_event.md

Author: structured-query-language

conditional_true_event.md

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 # CONDITIONAL_TRUE_EVENT
 
-`CONDITIONAL_TRUE_EVENT` is a powerful, yet underutilized Window Function in Snowflake. `CONDITIONAL_TRUE_EVENT` let's you cumulatively count the occurrences of a TRUE event in a WINDOW. 
+`CONDITIONAL_TRUE_EVENT` is a powerful, yet underutilized Window Function in Snowflake. `CONDITIONAL_TRUE_EVENT` let's you cumulatively count the occurrences of a TRUE event in a WINDOW. Under the cover, `CONDITIONAL_TRUE_EVENT` assigns an event window number to each row, starting from 0, and increments the number by 1 when the result of the boolean argument expression evaluates true.
 
 Here is a example of how to use it to count number of days the stock price was higher than the previous highest value of the Stock for a given Window.