Accepted 20 March 2001. Super- and subscripts also should be indicated by red marks. Do not put letter indications on the original tables. Consult the International Code of Botanical Nomenclature. Exceptions are allowed for chemicals with complicated structures.
Excessive abbreviations are to be avoided.
All measurements should be in the metric system and SI units are preferred. Year, month, week, day, hour, minute and second should be described as yr, mo, wk, d, hr, min and s. Do not use dash to omit author name or literature title when they appear in gReferences h repeatedly. The abbreviations of periodicals from the List of Serial Title Word Abbreviation are primarily used. The common abbreviations may be used if they are widely recognized.