| conRelPlot | Plotting conditional reliability |
| itemDist | Item difficulty distribution |
| itemfitPlot | Plotting itemfit estimates |
| itemInfoPlot | Plotting item information curves |
| itempersonMap | Visualize item person map and scale properties based on Rasch... |
| personDist | Person parameter distribution |
| personfitPlot | Plotting personfit estimates |
| pipe | Pipe operator |
| scaleCharPlot | Scale Characteristic Curve |
| sim_irt | Helper function to simulate IRT data |
| summaryPlot | A quick summary of IRT analyses |
| testInfoCompare | Comparing test information curves of parallel tests |
| testInfoPlot | Plotting test information curve |
| tracePlot | Plotting item characteristics curves |
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