Update README

.project

@@ -20,4 +20,15 @@
 		<nature>org.eclipse.jdt.core.javanature</nature>
 		<nature>org.eclipse.m2e.core.maven2Nature</nature>
 	</natures>
+	<filteredResources>
+		<filter>
+			<id>1599250965088</id>
+			<name></name>
+			<type>30</type>
+			<matcher>
+				<id>org.eclipse.core.resources.regexFilterMatcher</id>
+				<arguments>node_modules|.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments>
+			</matcher>
+		</filter>
+	</filteredResources>
 </projectDescription>

README.md

@@ -7,6 +7,17 @@ It uses the board's *REMOTE CONTROL* mode to remotely toggle the pins and read t
 
 Please, spend some time to read how the [Black Box Analysis](docs/Black_Box_Analysis.md) works and [how to handle recovered equations](docs/Minimize_Equations_with_feedbacks.md) that don't seem to fit a new PAL.
 
+**WARNING:** Currently, PALs that feeds the output of an equation back into the equation itself are **NOT** supported.
+Example:
+
+```text
+/o18 = /i2 & /i3 & /i4 & /i5 & o14 & o18 +
+       /i2 & /i3 & /i4 & /i5 & o15 & o18 +
+       /i2 & /i3 & /i4 & /i5 & o16 & o18 +
+       /i2 & /i3 & /i4 & /i5 & o17 & o18 +
+       /i5 & /o18
+```
+
 ### What it CAN do
 
 This analyzer works in tandem with the DuPAL board to: