-- card: 19204 from stack: in.01
-- bmap block id: 0
-- flags: 0000
-- background id: 3166
-- name: 


-- part contents for background part 1
----- text -----
 * function to turn on or off bits in a subset according to their
 * proximity to a given word's occurrences:
 *
 *  ("SETSUBSETBITS", wordNum, neighborhoodSize, setOrClear,
 *    keyFileRefNum, ptrFileRefNum, subsetHandle)
 *  --  returns quietly with nothing if it is successful in setting or
 *      clearing (depending on setOrClear's value, 0 or non-0) the
 *      bits in the subset flag array in the neighborhood of the
 *      chosen word(s); gives an error msg if there was a problem.
 *      neighborhoodSize is in characters and is used to determine
 *      how many bits to set/clear on each side of the instances...
 *
 * function to grab a chunk of text:
 *
 *  ("TEXT", textPtr, textChunkSize, textOffset, textFileRefNum)
 *  --  returns with (if possible; see below)
 *      textChunkSize bytes of text from the text file,
 *      starting at byte number textPtr-textOffset+1 and ending
 *      just before byte number textPtr-textOffset+textChunkSize+1.