[nbconvert.exporters]
html_with_lenvs = latex_envs.latex_envs:LenvsHTMLExporter
html_with_toclenvs = latex_envs.latex_envs:LenvsTocHTMLExporter
latex_with_lenvs = latex_envs.latex_envs:LenvsLatexExporter
slides_with_lenvs = latex_envs.latex_envs:LenvsSlidesExporter