Extreme Simplicity :

• CoSy is a TimeStamped notebook/log  created as an open vocabulary in Forth
   
  
• a ` word is any non blank string of characters .
  Space is the prime delimiter .
  
  • words pass information to each other by pushing it on , or taking it off a stack .
  
  
• The syntax is noun noun verb aka: RPN ( Reverse Polish Notation ) .
  
• A noun is a word which takes nothing off the stack just puts something on it .
• A verb is a word which either does some operation without touching the stack ,
  or takes one or more  items  from the stack and generally returns a result to it .
  But Note : a verb can look forward in the sentence it is in .
• the ` tick , ` on the upper left returns the following word as a CoSy simple string .
• Chuck Moore's brilliant ` quote , ' , returns the address of the following word
  rather than executing it . In particular , that allows a verb to be passed as an
  argument to a following verb . See Iterators .
  This supplies the power of a traditional APL .
  
  
• Tap F6 instead of Enteron any line & your computer
  will try to execute it .
  
  
• all nouns are lists , trees . At the Forth level they have a 3 cell header
  `( Type Count refCount )`
  Type 0 is list of lists , lists of pointers to lists .
  Simple lists like characters or numbers are the leafs .
  
  
• Indexing is modulo -
- like counting on your thumb & fingers : 0 1 2 3 4 0


• : name . . .  ;   adds a word to the dictionary .
  
  
• an extensive vocabulary evolved from APL via K , mainly slicing and dicing ,
  searching & replacing , and applying verbs to each item in lists .
  The philosophical goal of APLs is the succinct expression of algorithms
  whether cleaning HTML , handling mailing lists or family accounting  ,
  or finite element modeling the planet .
  
  
• The CoSy notebook environment itself is written in CoSy 

For example :
Split your note text on lineFeeds and return the lines containing the word cash .
And to make it a word
So can write
log ` cash con
to find and return all lines containing the word ` cash .