───WORDPOS(phrase,string──┬─────────┬──)───────
└─,start──┘
WORDPOS searches string for the first occurrence of the sequence of blank-delimited words phrase, and returns the word number of the first word of phrase in string. Multiple blanks between words in either phrase or string are treated as a single blank for the comparison, but otherwise the words must match exactly.
By default, the search starts at the first word in string. You can override this by specifying start (which must be positive), the word at which to start the search.
Here are some examples:
WORDPOS('the','now is the time') -> 3
WORDPOS('The','now is the time') -> 0
WORDPOS('is the','now is the time') -> 2
WORDPOS('is the','now is the time') -> 2
WORDPOS('is time ','now is the time') -> 0
WORDPOS('be','To be or not to be') -> 2
WORDPOS('be','To be or not to be',3) -> 6