jconc input files are structured text input files. They can be created manually of produced by a program or script, provided that the programmer has a good understanding of the jconc input file structure.
For most simple to intermediate problems, the easiest way to create valid jconc input files is to use the iMesh applet of the i-concrete web site. While the site allows directly passing from iMesh to iconc (the version of jconc on that site), it is also possible to ask for the iconc input file, which can be saved on your local disk for running with the jconc program.
The table below lists all keywords recognized by jconc and links to a specific page with explanations of the possible syntax options for the input. All lines of the input file start with one of the keywords below and ends with a star. Lines starting with unrecognized keywords are ignored and can thus be used to comment the input file. Empty lines are allowed.