[CSS2] Escape characters which need escaping for BSMD

Author: gsnedders

css2/Overview.bs

@@ -2388,7 +2388,7 @@ consists of one or more digits "0" to "9". A <number> can either
 be an <integer>, or it can be zero or more digits followed by a
 dot (.) followed by one or more digits. Both integers and real numbers
 may be preceded by a "-" or "+" to indicate the sign.
--0 is equivalent to 0 and is not a negative number.</p>
+\-0 is equivalent to 0 and is not a negative number.</p>
 
 <p>Note that many properties that allow an integer or real number as a
 value actually restrict the value to some range, often to a
@@ -7494,7 +7494,7 @@ requires the top border edge to be <em>below</em> the float, i.e., 2em
 lower. This means that clearance must be introduced.  Accordingly, the
 margins no longer collapse and the amount of clearance is set so that
 clearance + margin-top = 2em, i.e., clearance = 2em - margin-top = 2em
-- 3em = -1em.
+\- 3em = -1em.
 </div>
 
 <p>When the property is set on floating elements, it results in a
@@ -8804,7 +8804,7 @@ elements is:</p>
 
   <blockquote> 
     <p>'left' + 'margin-left' + 'border-left-width' + 'padding-left' + 'width'
-+ 'padding-right' + 'border-right-width' + 'margin-right' + 'right' = width
+\+ 'padding-right' + 'border-right-width' + 'margin-right' + 'right' = width
  of containing block </p>
   </blockquote>
 
@@ -9349,7 +9349,7 @@ dimensions must satisfy this constraint:</p>
 
   <blockquote>      
     <p>'top' + 'margin-top' + 'border-top-width' + 'padding-top' +      'height'
-+ 'padding-bottom' + 'border-bottom-width' +      'margin-bottom' + 'bottom'
+\+ 'padding-bottom' + 'border-bottom-width' +      'margin-bottom' + 'bottom'
 = height of containing block </p>
   </blockquote>
 
@@ -15048,7 +15048,7 @@ table:
 
 <blockquote>
 <p><var>row-width</var> = (0.5 * <var>border-width</var><sub>0</sub>)
-+ <var>padding-left</var><sub>1</sub> + <var>width</var><sub>1</sub> +
+\+ <var>padding-left</var><sub>1</sub> + <var>width</var><sub>1</sub> +
 <var>padding-right</var><sub>1</sub> +
 <var>border-width</var><sub>1</sub> +
 <var>padding-left</var><sub>2</sub> +...+