find
FIND tftemplate data (library procedure)
outputs the first constituent of the data input (the first member
of a list, or the first character of a word) for which the value
produced by evaluating the template with that consituent in its
slot is TRUE. If there is no such constituent, the empty list
is output.
In a template, the symbol ?REST represents the portion of the
data input to the right of the member currently being used as
the ? slot-filler. That is, if the data input is [A B C D E]
and the template is being evaluated with ? replaced by B, then
?REST would be replaced by [C D E].
In a template, the symbol # represents the position in the data
input of the member currently being used as the ? slot-filler.
That is, if the data input is [A B C D E] and the template is
being evaluated with ? replaced by B, then # would be replaced
by 2.