first character of condition is ‘n’ (nroff mode) or ‘o’ (odd page), it evaluates ... Heirloom extension and currently unsupported. nroff Force nroff mode. This is a groff extensionsixth \(em narrow space, zero width in nroff mode \^ one-twelfth \(em half-narrow space ... zero width in nroff \& zero-width space \) zero-width space transparent to end-of-senten…files for various programs .me Nroff source using the me macro package .mf Metafont (font