For testing the TXSTEP version March 2021 under macOS, proceed as follows: 1. Installing TUSTEP - Download the actual version of TUSTEP from the tustep homepage www.tustep.uni-tuebingen.de - install iTerm which is licensed under GPL v2 and may be downloaded from www.iterm2.com - install TUSTEP by following the instructions (a more detailed description you may find - in German - at www.tustep.uni-tuebingen.de/inst.html). - define a TUSTEP session by clicking at TUSTEP in the launchpad or double clicking at TUSTEP.app in the finder, as described in the installation instructions. By Clicking on "ok" in the window shown, a further window will open with details for the session to be defined. Under TUSTEP_DSK, you will be asked to enter a path name, e.g. ~/projects Fill in there the name of the path where TXSTEP has been installed. Under TUSTEP_PRJ, you will be asked to enter a project name. Fill in there "txstep" (without quotation marks). Under TUSTEP_MEM, give a unique 3-digit number for this session (e.g. 148) By clicking at "Einrichten", the respective TUSTEP sessin will be defined; then click at "Beenden" to close the window. 2. Installing and running TXSTEP - Download TXSTEP from the tustep homepage. - unzip the file txstep_2103.zip to the directory which you specified for TUSTEP_DSK when defining the TUSTEP session mentioned above. - If TUSTEP has been installed in a directory which is different from the default directory, then some system variables and other values used by TXSTEP must be adjusted. For this purpose, start the TUSTEP session defined above and give the following commands: #anmelde, txstep_inst (and press ENTER) #makro, txstep_inst (and press ENTER) This creates the files txstep.bat, log.bat, par_syntax.bat and encoding.bat in the directory txstep; in addition, the path names used in the script files which contain the solutions for the exercises are adjusted. - Start the Oxygen-Editor: click to "Project" in the toolbar and to "Open Project..." and select the file txstep/Oxygen_framework/txstep.xpr; a click to "Open" will activate the project txstep. The solutions for the exercises are found in subdirectory txstep/scripts. When you open one of these scripts in the oXygen editor, you may run it by clicking at "txstep" in the External Tools drop-down menu in the toolbar. Clicking at "txstep.logfile", the journal file containing the created TUSTEP commands and messages will be shown. If Oxygen is not available, you may run the TXSTEP script as follows (for "....", give the path name specified for TUSTEP_DSK, as described above, and replace "xxx.xml" by the name of the TXSTEP script you want to run): - in a terminal or iTerm window, change to the directory specified for TUSTEP_DSK, and enter /txstep/txstep script (where for "script" the complete path for the respective script must be specified) or - in a TUSTEP session, give the following command: #makro $$ execute "..../txstep/txstep script" *eof (where for "script" the complete path for the respective script must be specified)