tally()

Returns the number of existing occurrences of substring into string.

Syntax:
variable = tally( string , substring )
variable = tally( start , string , substring )

start is an optional start value specifies where in the string to begin the search.

Example:
a$="ciao ciao ciao ciao"
prints("string: "+a$)
prints( tally( a$, "ciao" ) )
prints( tally( 5, a$, "ciao" ) )
waitKey