tlaplus
                                TLC is a model checker for specifications written in TLA+. The TLA+Toolbox is an IDE for TLA+.   
                            
                        How to download and setup tlaplus
Open terminal and run command
                                            git clone https://github.com/tlaplus/tlaplus.git
                                        
                                        git clone is used to create a copy or clone of tlaplus repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with tlaplus https://github.com/tlaplus/tlaplus/archive/master.zip
Or simply clone tlaplus with SSH
                                            [email protected]:tlaplus/tlaplus.git                                    
                                    If you have some problems with tlaplus
You may open issue on tlaplus support forum (system) here: https://github.com/tlaplus/tlaplus/issuesSimilar to tlaplus repositories
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