
 What is this ?    
short answer: demo of how sub-items can analyze/break apart a part's text or (as in the examples) folder contents. Displays specific line#s of a text 'file', or line#'s matching a sort from the same 'file'. Can also be used as a 'keyless' index system, etc. etc. Hope this inspires...       Doing about 4 cool things here,  in one rule:     
Quote:++:+!NPIF:imatch([^Text] + [^Text2] + [^Text3] + [^Text4] + getpv(tv(), itl() - il() == 1) , "(?:[^\r]*\r\n?){" +( [Line#] - 1) + "}((?:[^\r]*\r\n?){1," +( [#ofLines] + 1)+ "})"): 
    [the 'N' helps make sure that the item updates both with it's own folder change, and it's parent's 'P'.]     
 We are comining several text folders of the parent "[^"  *and* the item text of the parent as well "getpv(.."   
 We match that based on the value in folder "[Line#]" etc...  to pull just the 'matched' text.     
 pulling out 1 + X number of lines starting at line number Y.       
 References a parent's folders , 
 References parent's  item text, 
 COMBINES referenced folders & item text in particular order, 
 builds a 'search'/'grab'  based on content of items OWN folder!     
 kind of cool and amazing stuff!       
 Either the TEXT or the specified folder text Text1 - Text4  (or both), is the base, 
 for every SUB ITEM the value in line# and #ofLines control the 'output' for that sub item.     
 Sub item can have whatever item text you want...