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|    752 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |    752 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% | 
|    753 \begin{frame}[t] |    753 \begin{frame}[t] | 
|    754 \frametitle{Parse Trees} |    754 \frametitle{Parse Trees} | 
|    755 \mbox{}\\[-12mm] |    755 \mbox{}\\[-12mm] | 
|    756  |    756  | 
|    757 \bl{\begin{plstx}: \meta{E} ::= \meta{F} | \meta{T} \cdot + \cdot \meta{E} |  \meta{T} \cdot - \cdot \meta{E}\\ |    757 \bl{\begin{plstx}: \meta{E} ::= \meta{T} | \meta{T} \cdot + \cdot \meta{E} |  \meta{T} \cdot - \cdot \meta{E}\\ | 
|    758 : \meta{T} ::= \meta{F} | \meta{F} \cdot * \cdot \meta{T}\\ |    758 : \meta{T} ::= \meta{F} | \meta{F} \cdot * \cdot \meta{T}\\ | 
|    759 : \meta{F} ::= num\_token | ( \cdot \meta{E} \cdot )\\ |    759 : \meta{F} ::= num\_token | ( \cdot \meta{E} \cdot )\\ | 
|    760 \end{plstx}} |    760 \end{plstx}} | 
|    761  |    761  | 
|    762 \begin{center}\small |    762 \begin{center}\small |