diff --git a/Notes/Literature/PRINCE2.md b/Notes/Literature/PRINCE2.md
index 1a8f820..5df48be 100644
--- a/Notes/Literature/PRINCE2.md
+++ b/Notes/Literature/PRINCE2.md
@@ -7,13 +7,20 @@ note: literature
 
 [[Project management]] method
 Can be used on any project of any size
-
-Features
+## Features
 - [[Business justification]] - the WHY of the business and long term value
 - [[Defined organisation structure]] - Ownership of people so they know what is expected of them
 - [[Product-based planning]] - product-first, good descriptions and breakdown structure
 - [[Stage division]] - divide the project into manageable phases
 - Tailorable
+## Project variables
+Six aspects of [[Project performance|project performance]]:
+- *Time* - when will the project be finished ?
+- *Cost* - what is the cost and the return of investment
+- *Quality* - usable software that passes quality checks and is usable
+- *Scope* - the scope must be clear for all stakeholder through the [[PPD]]
+- *Benefits* - benefits must be known, agreed upon and measurable
+- *Risk* - risk must be manageable