\input regression-test.tex
\documentclass{beamer}
\usepackage{osglecture-modes}
\NewDocumentCommand\OverlayOptional{o}
  {\IfNoValueTF{#1}{\TYPE{OVERLAY NONE}}{\TYPE{OVERLAY #1}}}
\MakeOverlayAwareCommand[arguments={o}]{\OverlayOptional}
\begin{document}
\START
\IfLectureModeTF{slides}{\TYPE{SLIDES YES}}{\TYPE{SLIDES NO}}
\IfLectureModeTF{beamer}{\TYPE{BEAMER YES}}{\TYPE{BEAMER NO}}
\IfLectureModeTF{presentation}{\TYPE{PRESENTATION YES}}{\TYPE{PRESENTATION NO}}
\IfLectureModeTF{article}{\TYPE{ARTICLE YES}}{\TYPE{ARTICLE NO}}
\mode<slides>{\TYPE{PORTABLE MODE YES}}
\mode<unknown-native>{\TYPE{NATIVE MODE BODY}}
\only<slides>{\TYPE{ONLY SLIDES YES}}
\only<article>{\TYPE{ONLY ARTICLE NO}}
\only<slides||article>{\TYPE{ONLY OR YES}}
\only<article||handout>{\TYPE{ONLY OR NO}}
\only<slides:1->{\TYPE{ONLY QUALIFIED YES}}
\only<article:1->{\TYPE{ONLY QUALIFIED NO}}
\uncover<slides>{\TYPE{UNCOVER SLIDES YES}}
\visible<slides>{\TYPE{VISIBLE SLIDES YES}}
\invisible<slides>{\TYPE{INVISIBLE SLIDES YES}}
\alt<slides>{\TYPE{ALT SLIDES YES}}{\TYPE{ALT SLIDES NO}}
\alt<article>{\TYPE{ALT ARTICLE NO}}{\TYPE{ALT ARTICLE FALLBACK YES}}
\action<slides>{\TYPE{ACTION SLIDES YES}}
\begin{onlyenv}<slides>\TYPE{ONLYENV SLIDES YES}\end{onlyenv}
\begin{uncoverenv}<slides>\TYPE{UNCOVERENV SLIDES YES}\end{uncoverenv}
\begin{visibleenv}<slides>\TYPE{VISIBLEENV SLIDES YES}\end{visibleenv}
\begin{invisibleenv}<slides>\TYPE{INVISIBLEENV SLIDES YES}\end{invisibleenv}
\OverlayOptional<1>[ONE]
\OverlayOptional<2>[HIDDEN]
\END
\end{document}