#LyX 2.2 created this file. For more info see http://www.lyx.org/ \lyxformat 504 \begin_document \begin_header \save_transient_properties true \origin unavailable \textclass article \begin_preamble \end_preamble \use_default_options false \maintain_unincluded_children false \language english \language_package default \inputencoding auto \fontencoding global \font_roman "default" "default" \font_sans "default" "default" \font_typewriter "default" "default" \font_math "auto" "auto" \font_default_family default \use_non_tex_fonts true \font_sc false \font_osf false \font_sf_scale 100 100 \font_tt_scale 100 100 \graphics default \default_output_format pdf5 \output_sync 0 \bibtex_command default \index_command default \paperfontsize default \spacing single \use_hyperref false \papersize a4paper \use_geometry false \use_package amsmath 0 \use_package amssymb 0 \use_package cancel 0 \use_package esint 0 \use_package mathdots 0 \use_package mathtools 0 \use_package mhchem 0 \use_package stackrel 0 \use_package stmaryrd 0 \use_package undertilde 0 \cite_engine basic \cite_engine_type default \biblio_style plain \use_bibtopic false \use_indices false \paperorientation portrait \suppress_date false \justification false \use_refstyle 0 \index Register \shortcut idx \color #008000 \end_index \paperwidth 22cm \paperheight 11cm \leftmargin 1cm \topmargin 0cm \rightmargin 1cm \bottommargin 0cm \secnumdepth 3 \tocdepth 3 \paragraph_separation skip \defskip medskip \quotes_language english \papercolumns 1 \papersides 1 \paperpagestyle empty \tracking_changes false \output_changes false \html_math_output 0 \html_css_as_file 0 \html_be_strict false \end_header \begin_body \begin_layout Standard The \begin_inset Quotes eld \end_inset longest label \begin_inset Quotes erd \end_inset marker in a labeling environment must be valid LaTeX (just like ERT). \end_layout \begin_layout Standard Setting the longest label to a string containing underscore (or another special character like \family typewriter \backslash ]$%#^ \family default ...) may lead to an uncompilable document (while in valid constructs like \family typewriter $ \backslash sin^2 x_i$ \family default they are OK). \end_layout \begin_layout Labeling \labelwidthstring Longest_Label_With_Underscore \noindent Label content. \end_layout \begin_layout Labeling \labelwidthstring Longest_Label_With_Underscore \noindent This labeling list has the longest label set to \begin_inset Quotes eld \end_inset Longest_Label_With_Underscore \begin_inset Quotes erd \end_inset . (See Edit>Paragraph>Settings...Longest label) \end_layout \begin_layout Labeling \labelwidthstring Longest_Label_With_Underscore It fails with \begin_inset Quotes eld \end_inset Missing $ inserted. \begin_inset Quotes erd \end_inset \end_layout \end_body \end_document