The Foundation · Feb 2026
Reverse Punctuation
Reverse punctuation flips the script: the marker comes first.
By placing punctuation at the start of a line, CLN tells you what type of
information you're looking at before your brain starts processing the content.
01/Definition
=
Traditional: "The server might crash." (Type
hidden until the end).
!
Reverse: ! The server might crash (Type known
immediately).
02/Cognitive Mechanism
Pre-attentive
.
Saccades: Eye movements land naturally on the
left margin.
. Peripheral
Vision: Operators are detected before focus.
.
Filtering: You scan for
! to find
risks, ignoring the rest.
=
!
.
?
CORE DEFINITION
CRITICAL RISK
FACTOR
SUPPORTING ACTION
OPEN QUESTION
03/The Binary Contrast
+
CLN: Consistent visual column; type known
immediately.
-
Prose: Ambiguity until the final character;
requires reading everything.
*
Note: Leading markers are common in programming
(
#, //). CLN generalizes this for all
thinking.
04The Scan Test
To verify if your CLN is working effectively, try the Scan Test:
. Cover the right
side of your note.
. Can you identify
where the risks, questions, and claims are?
*
Self-Test: Why is one fact per line mandatory?
|| To
prevent multiple operator types from conflicting on a
single line. ||