\newacronym{TCP}{TCP}{Transmission Control Protocol}
\newacronym{RFID}{RFID}{Radio-Frequency Identification}
\newacronym{GPS}{GPS}{Global Positioning System}
-\newacronym{RTOS}{RTOS}{Real-Time Operating System}
\newacronym{LCD}{LCD}{Liquid Crystal Display}
+\newacronym{AST}{AST}{Abstract Syntax Tree}