Editing Guide to technical writing (section)

==Mathematics==
* Use bold for vectors
* Single-letter  non-bold variables are in the italic maths font. Everything else in the mathematics is in the regular upright Roman font. The backslash in front of functions such as \sin and \cos will take care of this for you, when using LaTeX. But, in other cases, to force the upright Roman font you need to use {\rm...}.
* Avoid using an asterisk to mean multiplication or convolution, in the main text. An asterisk is only allowed to mean multiplication in computer code. To mean multiplication, most of the time just put two variables next to each other. Sometimes you can insert \cdot if you want to be explicit. If you are multiplying raw numbers use \times.   For convolution use \otimes.   If you really need to use an asterisk for convolution, do not use * but use \ast. The \ast version uses the operator font and is properly centered.  
* Remember each equation is considered part of a sentence and obeys the rules of English punctuation.  In terms of punctuation, one equation counts as one word, no matter how long it is.