Authors should avoid the use of specially designed ``define characters'' and choose symbols from those shown in the LaTeX User's Guide & Reference Manual . There is no guarantee that a specially designed definition will be supported by the conversion software and in the production environment. If a special symbol is required and not listed in the LaTeX User's Guide & Reference Manual , please request special consideration in the cover letter accompanying the file submittal. The copyeditor will make note of it and the production staff will attempt to accommodate the author. Unusual characters are subject to approval by the editor.
See Appendix A for a list of normal LaTeX symbols, a list of symbols
available when the amsfonts and amssymb options are used, and
a list of extra symbols made available by REVTeX .