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 Foreword
 TwinCAT 3 PLC
 Creating and configuring a PLC project
 Exporting and transferring a PLC project
 Localizing the PLC project
 Programming a PLC project
 Transfer PLC project to the PLC
 Testing and troubleshooting
 PLC project at runtime
 Updating the PLC project on the PLC
 Using a stand-alone PLC project
 Using libraries
 Multi-task data access synchronization in the PLC
 Creating a visualization
 Reference Programming
 Programming languages and their editors
 Variable types and special variables
 Local Variables - VAR
 Input Variables - VAR_INPUT
 Output Variables - VAR_OUTPUT
 VAR_IN_OUT variables - VAR_IN_OUT, VAR_IN_OUT CONSTANT
 Global Variables - VAR_GLOBAL
 Temporary Variable - VAR_TEMP
 Static Variables - VAR_STAT
 External Variables - VAR_EXTERNAL
 Instance Variables - VAR_INST
 Remanent Variables - RETAIN, PERSISTENT
 SUPER
 THIS
 Variable types - attribute keywords
 Operators
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 Pragmas
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 Keywords
 Methods FB_init, FB_reinit and FB_exit
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